Best in 7 days
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Ships within 48 hours · Estimated delivery Jun 13 - Jun 18
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Description
Sierra Designs Flex Trail 40–60L Pack – Expandable Hiking BackpackSierra Designs Flex Trail 4060L Pack Expandable Hiking Backpack Explore like a pro no matter your experience level. The Flex Trail ultralight backpack gives you the ability to tailor the pack size to your adventure needs by taking advantage of the horizontal gussets. Cinch it down to a 40L cargo pack capacity for your shorter trips. Expand it out to 60L for your longer backpacking adventures. Continue to customize your backpack with the hardware based
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.6 ★★★★★
Based on 1410 reviews
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Product Reviews
★★★★★ 5
Nice backpack!
Color: Atrovirens, Size: 15.6 Inch
Right out if the bag I liked the color. The material seems like it will wipe down easily. Functionally, I think it is going to work out nicely. I wanted a bag for my computer and weekend clothes. Plenty of room
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Reviewed in the United States on February 13, 2026
★★★★★ 5
Perfecta para oficina.
Color: Apricot, Size: 15.6 Inch
Perfecta y súper aesthetic.
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Reviewed in the United States on January 20, 2026
★★★★★ 5
Good work bag
Color: Atrovirens, Size: 15.6 Inch
Lots of pockets, comfy straps, very lightweight. I use it for work daily and it’s exactly what I need. Great bag so far.
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Reviewed in the United States on December 6, 2025
★★★★★ 5
Will buy again
Color: Atrovirens, Size: 15.6 Inch
Lightweight, convenient, and perfect for carrying my laptop and study essentials!
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Reviewed in the United States on December 17, 2025
★★★★★ 5
Very nice!
Color: Apricot, Size: 15.6 Inch
Very sturdy backpack! It fits everything. I love all of the pockets and also love the look of the bag.
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Reviewed in the United States on October 11, 2025
