Reviews

Alteration Sierra Jacket (Unisex)

Dec 23, 2025

Adult down

This is a light and warm down jacket that can be easily worn. It uses GORE-TEX WINDSTOPPER, providing water resistance, wind resistance, and breathability, making it convenient for town use. The button design is also 💯.

Yoshi
Age: 40s
Usage Scene: Lifestyle
Gender: Male
Fit: Just right
Height: 181-185cm
Size: L
Weight: 76-80kg
Color: K
Dec 14, 2025

In a different color

I purchased it. I bought one last year too, but this year I bought it in black in a different color.
The Nuptse is a bit too standard, so I wanted an alternation!
The logo is the same color, and it's warm and has a simple, cute appearance.

Yuu-chan
Age: 40s
Usage Scene: Lifestyle
Gender: Female
Fit: Large
Height: 161-165cm
Size: S
Weight: -
Color: K
Dec 14, 2025

Light and warm!

The logo isn't too prominent, and it goes well with both casual and smart styles.
The down's fluffiness is toned down, so the silhouette is elegant.
It's highly recommended for those who want to choose The North Face for everyday use.

Yosuke Fukui
Age: 20s
Usage Scene: Business/School
Gender: Male
Fit: Just right
Height: 171-175cm
Size: S
Weight: 51-55kg
Color: K
Dec 10, 2025

Warm

I bought a size S.
It felt warmer than it looks!
It's a shame it's not a zipper type.

Mami-chan
Age: 40s
Usage Scene: Lifestyle
Gender: Female
Fit: Just right
Height: 156-160cm
Size: S
Weight: 51-55kg
Color: MR
Dec 07, 2025

Very satisfied

It's light and warm, and the advice from the salesperson was spot on.

I love dogs
Age: 50s
Usage Scene: Outdoor
Gender: Female
Fit: Just right
Height: 161-165cm
Size: M
Weight: 51-55kg
Color: K
Dec 07, 2025

Christmas gift

I gave it as a Christmas present.
It feels very comfortable and is perfect for everyday use.
I also got it wrapped, and I'm very satisfied.

Saitama
Age: 40s
Usage Scene: -
Gender: Male
Fit: Just right
Height: 171-175cm
Size: XL
Weight: -
Color: Black
Dec 05, 2025

Light and very good

It's light and very warm.
I think it's easy to handle with the snap type instead of a zipper.

Don-chan
Age: 40s
Usage Scene: Business/School
Gender: Male
Fit: Just Right
Height: 166-170cm
Size: M
Weight: 66-70kg
Color: Graphite Gray
Nov 27, 2025

Good front buttons!

Most down jackets and outerwear have zippers in the front, but this down jacket uses front buttons, making it very practical. The amount of down is not too stuffed, just the right amount, which is best for everyday wear.

T
Age: 50s
Usage Scene: Lifestyle
Gender: Male
Fit: Just Right
Height: 171-175cm
Size: L
Weight: 71-75kg
Color: K
Nov 27, 2025

Cozy

It has the fluffiness of down but fits well; it doesn’t feel cold just wearing a T-shirt underneath, which is great ◯.

Y.K
Age: 40s
Usage Scene: lifestyle
Gender: man
Fit: just right
Height: 176-180cm
Size: L
Weight: 76-80kg
Color: graphite gray
Nov 24, 2025

Satisfied

I think it's simple and easy to match.
I bought a size M, and even though the length is a bit long, I thought it would be fine if I adjusted it with the drawcord.
I want to use it for a long time.

Yu
Age: 30s
Usage Scene: Lifestyle
Gender: Male
Fit: Just right
Height: 171-175cm
Size: M
Weight: 61-65kg
Color: Black
Nov 24, 2025

Fashionable

Warmth, design, very good.
The color of the logo at the neck is nice too.
I also recommended a different color to my sister.

Tama-chan
Age: 40s
Usage Scene: Lifestyle
Gender: Female
Fit: Just right
Height: 161-165cm
Size: XS
Weight: 46-50kg
Color: MR
Nov 20, 2025

Challenging in gray.

I usually wear a lot of black winter outerwear, so this time I purchased gray. For my slim figure, size S might be a perfect fit. The color is calm, and it’s incredibly light. I'm very satisfied.

Anonymous
Age: 50s
Usage Scene: Lifestyle
Gender: Male
Fit: Large
Height: 171-175cm
Size: M
Weight: 61-65kg
Color: Graphite Gray
Nov 18, 2025

Unsure about the size

It looked more voluminous in person than online. Especially, the arms have a bulky look. At 163 cm with a normal build, the size feels:
XS→The body width is just right, and the length is just above the middle of the butt.
S→The body width is a bit relaxed. The length covers just enough of the butt, giving a more casual impression than XS.

I’m torn, but with a thicker knit underneath and the point that my butt won’t feel cold, I think I’ll go with S.

maimai
Age: 40s
Usage Scene: Lifestyle
Gender: Female
Fit: Large
Height: 161-165cm
Size: XS
Weight: 51-55kg
Color: Graphite Gray
Nov 13, 2025

Feels good

It's a design that looks cool even for ladies.
If you’re particular, trying it on is a must.

Uma-chan
Age: 40s
Usage Scene: Lifestyle
Gender: Female
Fit: Large
Height: 171-175cm
Size: S
Weight: 51-55kg
Color: K
Nov 09, 2025

Very warm

It's very warm and doesn't let the wind through. It goes up to the neck, so I think it can be worn even in the dead of winter. It’s light, warm, and the design is nice; I think it’s just like The North Face.

Pon
Age: 30s
Usage Scene: Lifestyle
Gender: Man
Fit: Just right
Height: 161-165cm
Size: M
Weight: 56-60kg
Color: K
Nov 03, 2025

Warm

It's loose enough to wear over a suit, making it very practical. Plus, it's very warm(^^).

snow
Age: 50s
Usage Scene: Lifestyle
Gender: Men
Fit: Large
Height: 171-175cm
Size: XL
Weight: 81-85kg
Color: Black
Oct 26, 2025

This one piece is enough

At first glance, it looked thick, but wearing it feels light and warm.
I think it can be worn from around now when it’s getting a bit chilly until spring.
Although it's down, it has a slightly subdued silhouette, so it seems usable for both business and casual occasions.
I think having one would be good.

Tan-tan
Age: 40s
Usage Scene: Business/Commute
Gender: Male
Fit: Just right
Height: 171-175cm
Size: M
Weight: 71-75kg
Color: K
Oct 06, 2025

I love it!

I really like this jacket. I like everything about it: the material, the shape, and the logo being in the same color. I already own the other two colors, so I bought the gray this year. I'm looking forward to winter.

ek
Age: 40s
Usage Scene: Lifestyle
Gender: Female
Fit: Just right
Height: 151-155cm
Size: XS
Weight: 46-50kg
Color: Graphite Gray
Aug 17, 2025

Light

I love how the fabric is so light. Since I travel by car, the length is just right. I'm satisfied that I can wear it casually.

Taa
Age: 50s
Usage Scene: Lifestyle
Gender: Female
Fit: Just Right
Height: 151-155cm
Size: XS
Weight: 51-55kg
Color: Fallen Rock
May 25, 2025

Love at first sight

When I saw the video for the first time, I fell in love at first sight and tried it on in the store; I liked it even more, so I purchased it immediately. The color of the logo being the same is a plus. I just have some concerns about dust and wrinkles.

Oji
Age: 50s
Usage Scene: Lifestyle
Gender: Male
Fit: Just right
Height: 161-165cm
Size: L
Weight: 76-80kg
Color: K
May 14, 2025

Perfect for light and warm town use

It's obviously light and warm since it's a down jacket.
Many down jackets tend to be casual, but because the outer fabric has a matte texture, you can create a calm coordination.

Perfect for town use
Age: 20s
Usage Scene: Lifestyle
Gender: Male
Fit: Just right
Height: 166-170cm
Size: S
Weight: 66-70kg
Color: FR
May 14, 2025

Perfect!

The material feel and lightness are just the design I wanted⭐︎ I've been wearing it all winter this year!

summer
Age: 30s
Usage Scene: Lifestyle
Gender: Female
Fit: Just right
Height: 151-155cm
Size: S
Weight: -
Color: K
May 14, 2025

Warm

It's really warm.

hn
Age: 50s
Usage Scene: Lifestyle
Gender: Male
Fit: Just right
Height: 176-180cm
Size: L
Weight: 81-85kg
Color: Black
May 07, 2025

A versatile down jacket for adults that looks great in both the city and nature

It’s great for commuting in the winter and outdoor activities on weekends. Although it's light, it's warm and effectively blocks the wind, so I can move comfortably even in cold winds. The matte texture and subdued color blend well with adult coordination and look natural when paired with denim or wool pants. It has a relaxed silhouette, so even with a thick knit underneath, it doesn’t feel bulky, and it's easy to put on and take off, which is a plus.

Hidemaro
Age: 40s
Usage Scene: Lifestyle
Gender: Male
Fit: Just right
Height: 166-170cm
Size: L
Weight: 66-70kg
Color: K
Feb 02, 2025

I love it.

I also really like the design and fit. The color is versatile.

Taro
Age: 20s
Usage Scene: Lifestyle
Gender: Male
Fit: Just right
Height: 181-185cm
Size: L
Weight: 56-60kg
Color: CE
Jan 28, 2025

Good design

It feels a bit big, but with a thick inner layer, it fits just right.
Light yet warm!
I am satisfied.

Mustaf
Age: 30s
Usage Scene: Lifestyle
Gender: Male
Fit: Large
Height: 176-180cm
Size: XL
Weight: 71-75kg
Color: K
Jan 26, 2025

Lightweight and easy to wear

I'm wearing it casually instead of my Baltoro jacket.
I read in a review that black attracts lint easily, so I chose this color.
I’ve worn it several times and it hasn’t been an issue at all. I love the beautiful color.
I think it’s okay not to wear too many layers underneath.

for
Age: 60s
Usage Scene: Lifestyle
Gender: Female
Fit: Large
Height: 161-165cm
Size: XS
Weight: 46-50kg
Color: FR
Jan 07, 2025

Good

I'm glad I opted for XL.
It's fluffy, and it feels different from the Nuptse.

T
Age: 30s
Usage Scene: Lifestyle
Gender: Male
Fit: Just right
Height: 176-180cm
Size: XL
Weight: 71-75kg
Color: Black
Jan 07, 2025

Fabric and text are in similar colors

I like that the letters of 'North' are the same color as the fabric; it’s subtle and stylish. It’s really warm and light, so it doesn’t worsen my shoulder stiffness and is easy to move in. If it had a hood, it would have been perfect, so I give it 4 stars.
The hem can be tightened, which is great for changing the impression when wearing it.

Mayu
Age: 40s
Usage Scene: Lifestyle
Gender: Female
Fit: Just right
Height: 156-160cm
Size: S
Weight: 51-55kg
Color: FR
Jan 05, 2025

Feels really nice

I’ve been interested in it since last year, and this year I'm considering the Camp Sierra as an option... I’m a bit concerned about the dust and other things sticking to it.
But overall, it’s a win for the Alternation.

Ore
Age: 60s
Usage Scene: Lifestyle
Gender: Male
Fit: Just right
Height: 171-175cm
Size: L
Weight: 61-65kg
Color: K
Jan 05, 2025

Cool

The design is good! I don’t like the bumpy design of down jackets, so I found this very easy to wear and visually neat. The size was one size smaller than usual and it fit perfectly.

Kuro
Age: 40s
Usage Scene: Lifestyle
Gender: Female
Fit: Just right
Height: 161-165cm
Size: S
Weight: 46-50kg
Color: K
Dec 26, 2024

Thank you, store clerk

Purchased in-store. This winter is severe, so I was looking for a down jacket. I was confused about choosing the size, but after consulting with the staff, I tried on sizes S/M/L and chose M. The fit and design are good, and it's warm. The price is a bit high, and the left and right pocket openings seem a bit inconvenient, but I'm glad I bought it. I think it’s better to try it on before purchasing. Also, I wish they would expand the range of products without prominent brand logos.

Lizard Bazooka
Age: 40s
Usage Scene: Lifestyle
Gender: Male
Fit: Just right
Height: -
Size: M
Weight: -
Color: K
Dec 22, 2024

The North Face down

It looks fantastic even in fashionable scenes, and I'm very satisfied.
Unlike previous downs, it's cool!
It matches perfectly with smart clothing.

Mii
Age: 20s
Usage Scene: Lifestyle
Gender: Female
Fit: Large
Height: 166-170cm
Size: S
Weight: 41-45kg
Color: K
Dec 15, 2024

Super cool

I was hesitant to purchase a down jacket, but this one has a subtle logo and can be worn for business, making it an excellent item. The size M fit perfectly.

Koshiro
Age: 50s
Usage Scene: Lifestyle
Gender: Male
Fit: Just right
Height: 166-170cm
Size: M
Weight: 66-70kg
Color: Black
Dec 08, 2024

Fluffy and cute

The brand name is modest, and the use of Gore-Tex material is attractive because of its high functionality🎯

I'm short, so I tend to wear it with only the top button fastened 😊

I tend to feel cold, but,
maybe because I bought a new down jacket this year,
I haven’t felt cold yet ✨

Yu
Age: 20s
Usage Scene: Lifestyle
Gender: Female
Fit: Just right
Height: 151-155cm
Size: XS
Weight: 46-50kg
Color: K
Dec 03, 2024

Love at first sight

I visited to look for gloves and scarves and found this jacket.
I really like the color and how it feels on me.

KAZOO
Age: 50s
Usage Scene: Lifestyle
Gender: Male
Fit: Just right
Height: 166-170cm
Size: M
Weight: 66-70kg
Color: FR
Nov 28, 2024

Lightweight and warm

I bought size XS, and at 157cm it's quite roomy, but even with a thick knit underneath, it feels comfortable, and it's great for casual wear!
It's light and warm; I didn't feel much cold even in Hokkaido in November!

Sunu
Age: 30s
Usage Scene: Lifestyle
Gender: Female
Fit: Large
Height: 156-160cm
Size: XS
Weight: 46-50kg
Color: FR
Nov 27, 2024

Just the right amount of volume

I’ve avoided wearing down jackets in the past because I disliked the bulky feeling, but this one has just the right amount of volume and the silhouette is beautiful. When zipped up, I didn’t even need a scarf. It’s not a zipper, but personally, the cold didn’t bother me even when I was outside all day. I made a very good purchase!

MA
Age: 20s
Usage Scene: Lifestyle
Gender: Female
Fit: Just right
Height: 156-160cm
Size: XS
Weight: 46-50kg
Color: K
Nov 17, 2024

Immediate decision

I had been interested in the color online, and when it came into stock at the store I use, I tried it on.
It had a great color that exceeded my expectations, and I bought it without hesitation.
It’s definitely a must-have for this season!

Hao
Age: 50s
Usage Scene: Lifestyle
Gender: Male
Fit: Just right
Height: 176-180cm
Size: L
Weight: 81-85kg
Color: CE
Nov 07, 2024

It’s still a bit early for this.

It’s a bit early to wear it, but the fit feels really good. It doesn't look overly puffy, so it's fine for everyday use.

Sachi
Age: 60s
Usage Scene: Outdoor
Gender: Woman
Fit: Just right
Height: 161-165cm
Size: M
Weight: 51-55kg
Color: Black
Nov 04, 2024

Cool down

It's a very warm jacket that doesn't look too bulky and doesn't feel like down.
I recommend it.

Kenken
Age: 30s
Usage Scene: Lifestyle
Gender: Male
Fit: Just right
Height: 176-180cm
Size: XL
Weight: 71-75kg
Color: K
Nov 04, 2024

Stylish

I loved the matte texture.
I heard the wind can easily come in since it's just a button, but I think it's light and warm.
I'm looking forward to wearing it since it's still winter and I haven't tried it on yet.

Shibaban
Age: 50s
Usage Scene: Lifestyle
Gender: Male
Fit: Just right
Height: 166-170cm
Size: L
Weight: 61-65kg
Color: K
Oct 27, 2024

Favorite⭐︎

I was torn about getting black, but since it can easily collect lint, I chose the beige color.
It's also an easy color to match. The fact that the front has button closures makes it easy to use. I'm glad I reserved it and bought it.

Rii
Age: 40s
Usage Scene: -
Gender: -
Fit: just right
Height: 161-165cm
Size: S
Weight: -
Color: Fallen Rock
Feb 21, 2024

Fluffy

It was fluffier than I imagined,
but it's warm enough even in deep winter!
I think it will look great when paired with wide pants^^

Koutarou
Age: 60s
Usage Scene: Lifestyle
Gender: Male
Fit: Just right
Height: 171-175cm
Size: L
Weight: 61-65kg
Color: Black
Feb 07, 2024

Cool down jacket

If you want to wear it loosely, I recommend XL. It's not too long, so it doesn't look sloppy even in an oversized fit.

PAP
Age: 40s
Usage Scene: Lifestyle
Gender: Male
Fit: Large
Height: 171-175cm
Size: L
Weight: 71-75kg
Color: FR
Jan 03, 2024

Sierra

Light, warm, and good design.
I thought my neck might get cold, but since there's down in the collar, I'm fine.
It tends to attract dust easily, so I gave it four stars.

Old Fan
Age: 50s
Usage Scene: Lifestyle
Gender: Male
Fit: Just right
Height: 171-175cm
Size: XL
Weight: 86-90kg
Color: Black
Nov 26, 2023

Urban and cool

I bought it because I liked the appearance, but when I tried it on, it was very light and easy to wear. I'm looking forward to getting cold.

Gussan
Age: 40s
Usage Scene: Lifestyle
Gender: Male
Fit: Just right
Height: 181-185cm
Size: XL
Weight: 96-100kg
Color: FR
Nov 05, 2023

Altertnssierrajkr

It was very easy to wear.

A
Age: 60s
Usage Scene: Lifestyle
Gender: Female
Fit: Just right
Height: 166-170cm
Size: M
Weight: 51-55kg
Color: UN
Oct 29, 2023

Urban

I bought Fallen Rock.
It's urban.

Ruka
Age: 20s
Usage Scene: Lifestyle
Gender: Female
Fit: Large
Height: 156-160cm
Size: M
Weight: 41-45kg
Color: Fallen Rock
Oct 25, 2023

Matte feeling

Simple and mature-looking, with plenty of room, it's an incredibly cool down jacket.
I'm also considering buying the hooded version.

Fukkun
Age: 40s
Usage Scene: Lifestyle
Gender: Male
Fit: Just right
Height: 161-165cm
Size: S
Weight: -
Color: Black