Expander Back Pack Utility Backpack Water Resistant

Black / ONE SIZE

$118.00 USD $122.00 USD

1/42

Expander Back Pack Utility Backpack Water Resistant

1472294400003

2 reviews

$118.00 USD $122.00 USD

Shipping calculated at checkout.

A functional backpack from yosemite strap

● This backpack extends vertically when the zipper on the bottom side is opened, allowing for expansion.
● The main fabric is made of water-repellent nylon. The expanded section also uses water-repellent material, making it a convenient backpack suitable for work, travel, and gym use.
● The front pocket features reflective material under a mesh fabric, which subtly reflects car lights at night.
● It also includes a dedicated opening for quick access to your PC, making it easy to retrieve your laptop on the go.
● The handle is made from a high-quality 9mm rope, manufactured in Japan, used in the yosemite strap.
● The back includes a tape that can be secured around a carry case handle. This functional and versatile backpack is ideal for daily use.

※ Height when stored is 44cm, and when expanded is approximately 56cm, allowing for easy visualization of capacity change.

※ Side pocket size
Diameter: approximately 8cm, Height: approximately 19.5cm

※ Capacity: approximately 20L

※ The color representation in this product is managed internally, which may differ from the color shown on the tag.
[Website Representation: Tag Representation]
Black: MAD BLACK REFLECTER
Olive: KHAKI REFLECTER

※ The color of the product in the photos may differ from the actual item due to lighting and angles outdoors and indoors. The displayed size may also slightly differ from the actual product, so please be aware of this in advance.

※ Please check the quality label and attention tag attached to the product when wearing or handling it.

SIZE(cm)	Width	Height	Depth	Weight(g)
ONE SIZE	31.0	44.0	15.0	595

All measurements are in (cm).

Because outer measurements are taken by hand, slight variations (about 1–2 cm) may occur depending on the product.

Measurement methods may vary depending on the material, product shape, and whether accessories are included.

To confirm the best fit, we recommend measuring a similar item you own and comparing it with the garment measurements.

Shipping destinations

We ship directly from Japan to the United States, Canada, Australia, and the United Kingdom via EMS.

Shipping charges

Free shipping on orders of US$500 or more, or the equivalent in your selected currency. For orders below this amount, shipping is calculated by package weight:

United States: US$40 up to 4.4 lb (approximately 2 kg), and US$60 above 4.4 lb.
Canada, Australia, and the United Kingdom: US$35 up to 4.4 lb (approximately 2 kg), and US$50 above 4.4 lb.

These rates are set in USD and converted to your checkout currency where applicable. The final shipping charge is shown at checkout. If your order ships in multiple packages, their shipping charges may be combined.

Processing and delivery

Processing takes 5-10 business days before dispatch. Estimated shipping time to the United States is 7-14 business days after dispatch. Transit times to Canada, Australia, and the United Kingdom vary by destination; contact us for an estimate before ordering.

Delivery may be delayed by customs inspections, natural disasters, or postal strikes.

Import duties and taxes

Greybird covers all applicable import duties and taxes for orders shipped to every destination we support. If customs or your carrier requests payment, please contact our support team for assistance. See our import duties and taxes policy for details.

Order tracking

Your dispatch confirmation email includes your tracking number and tracking link. Use that link to follow your parcel from Japan through delivery in your country.

For shipping questions or help with tracking, contact hello@greybird.store.

Returns & Exchanges

All items are purchased brand new from the original source and shipped as is.

Returns, refunds, and exchanges are not accepted for overseas orders unless the customer receives an incorrect item due to our fulfillment error.

To request review, please contact us within 3 days of delivery with your order number, clear photos, and a description of the issue. Returns will not be accepted without prior email approval.

We Cannot Accept Returns or Exchanges If:

The item was received as ordered
More than 3 days have passed since delivery
The item has been worn, used, or washed
The item has odors, stains, or damage after delivery
Original accessories, packaging, or boxes are missing
The item has been altered or repaired
The item was purchased as a sale or discounted product

We cover all applicable import duties and taxes for orders shipped to the United States, Canada, Australia, and the United Kingdom.

If you receive a payment request from customs or your carrier, please contact our support team for assistance.

Mar 01, 2026

Convenient with a belt that can secure it to the suitcase. It's also nice that it can store a tablet. It would be even better if the inside had mesh.

flower

Age: in their early 40s

Usage Scene: -

Gender: female

Fit: -

Height: -

Size: ONE SIZE

Weight: -

Color: Black

Helpful: 22

Feb 21, 2026

It holds a lot. Good.

IKE

Age: late 50s

Usage Scene: -

Gender: male

Fit: -

Height: 176cm

Size: ONE SIZE

Weight: 70-74kg

Color: black

Helpful: 26

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Expander Back Pack Utility Backpack Water Resistant

Expander Back Pack Utility Backpack Water Resistant

Shipping destinations

Shipping charges

Processing and delivery

Import duties and taxes

Order tracking

Reviews

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Country/Region

Expander Back Pack Utility Backpack Water Resistant

Expander Back Pack Utility Backpack Water Resistant

Shipping destinations

Shipping charges

Processing and delivery

Import duties and taxes

Order tracking

Reviews

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