Ultralight Backpacks
Up to 30% Off Backpacks This Week Only- All Backpacks On Sale
Join the Live Ultralight Membership for year round discounts & bigger discounts during sales.
Lighter Weight, Higher Performance
Our packs are built with high performing ultralight materials like:
- UltraWeave™ 200
- Robic Nylon with Spectra Ripstop
- Carbon Fiber
- EVA foam
- Ultra™ Stretch Mesh
"I’ve worn over 20 backpacking packs in the past year, and the 27-ounce Outdoor Vitals CS40 Ultra Backpack carries weight the best." -Gear Junkie
"To me, the 40-liter, 27-ounce CS40 feels like a perfect use case for the fabric--a versatile, do-it-all pack built with some of the toughest material available." -Backpacker
"This pack carries more like a vest than some of my actual running vests. The suspension and harness are intuitive and easy to dial in. The water bottles are the perfect size, and the bottle pockets are placed perfectly." -David
"I’ve only had the bag 2 weeks but it’s hand down my new favorite. Everything as promised. I can’t wait to hit the trails." -Justin
"This pack was definitely the perfect choice. It is super comfortable and functional. I actually really love the outside zipper, split front pocket, and the upper side pockets." -Kayla