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Front close-up of the Semsty expandable hiking backpack in green and black, showing the main zippered compartments, adjustable buckle straps, breathable mesh side pockets, and contoured shoulder padding.

Semsty green expandable hiking backpack with 50L expanded size. Features include side mesh pockets, front buckle straps, and an expandable bottom pocket that increases the capacity by 10L when unzipped.

Rear view of the Semsty expandable hiking backpack in green showing ergonomic back panel features. Highlights include breathable padded shoulder straps, an adjustable sternum strap with emergency whistle, D-ring for gear attachment, external suspension strap, mesh side pockets for water bottles, and a secure waist buckle for added support.

Front view of the Semsty expandable green hiking backpack showing internal and external pocket organization. Callouts highlight main compartment for laptop and clothes, middle pocket for tablet or wallet, front pocket for snacks, and bottom pocket for small items. A coiled climbing rope is attached to the front daisy chain system.

Semsty 50L green expandable hiking backpack displayed outdoors on a rocky ledge surrounded by essential camping and travel gear including boots, rope, camera, rolled mat, water bottles, towels, and a sleeping bag, emphasizing its large capacity and suitability for adventure and multi-day trips.

Three hikers sitting on a rocky mountain trail with Semsty hiking backpacks in black, green, and red, studying a map under the sun—showcasing the backpacks in a real outdoor adventure setting.

Two hikers wearing Semsty expandable hiking backpacks—one in green and one in blue—standing in front of a vintage red train, showcasing the ergonomic design and comfort of the backpacks during outdoor travel and day hikes.

Semsty Expandable Hiking Backpack - 40L+10L Green Travel and Hiking Backpack

$50.51

$58.09

Shipping & Processing Time: 5-7 Business Days

Details +

Best Use: Camping/Hiking Backpack
SKU: WWCMP-4010LHB-GRN
UPC: 711181487022
Color: Green
Brand: Semsty
Material: Nylon
Length: 13.98"
Width: 7.99"
Height: 21.46"
Weight: 2 lbs
Capacity: 40L + 10L
Outer Material: Nylon

Description +

Experience versatility and comfort with the Semsty Expandable Hiking Backpack, built to handle your toughest outdoor adventures. Designed for hikers and travelers, this 40L backpack expands to 50L using a bottom zipper, offering additional space without compromising shape or comfort. From weekend trips to long hikes, its breathable back padding, adjustable straps, and multiple compartments make packing smarter and carrying easier. Whether you're trekking mountains or boarding a flight, this carry-on compatible daypack is your perfect companion.

Features +

Expandable Capacity

Transforms from 40L to 50L with a simple zipper extension, ideal for flexible packing on extended trips.

Comfort-Driven Design

Breathable padded back, adjustable shoulder straps, and waist/chest support help reduce fatigue during long hikes.

Smart Storage Solutions

Features include side mesh pockets, a bottom compartment, gear loops, and multiple zippered sections for organized storage.

Durable Outdoor Material

Made from abrasion-resistant polyester fabric with reinforced stitching and premium zippers for long-term use.

Carry-On Ready

Meets most airline size requirements and is ideal for use as a travel, camping, or everyday hiking backpack.

What's Included +

(1) Semsty Expandable 40L+10L Hiking Backpack

(1) Adjustable Chest Strap with Emergency Whistle

(1) Zipper Expansion Panel

Disclaimer +

Expansion feature should be zipped securely before heavy use to maintain shape and load stability.

Water resistance is light to moderate; not intended for full submersion or torrential conditions.

Colors may vary slightly due to different monitor settings.

Please allow for minor measurement deviations due to manual measurement.

A woman hiking along a beach, carrying a large backpack and walking on a log, with driftwood and cliffs in the background.

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