CS40 Ultra Backpack

Everything Outdoor Vitals claims it to be and more

I couldn’t be happier with the CS40 Ultra Backpack. After using several top brand backpacks, this has become my favorite. I was initially skeptical about the fit and feel without a rigid frame, but after a two-day backcountry trip I was completely sold. I even showed it to multiple hikers along the trail in the Grand Canyon because I was so impressed. Once home, I sold three of my other backpacks knowing I would not be going back. The lifters and carbon inserts are well designed and perform better than expected. It takes some adjustment compared to packs with more traditional pockets, but the rear panel access is very convenient for quickly reaching essentials. The waist belt pockets are also well placed and actually usable, fitting a full-size phone and hygiene kit on one side, with the other holding more electrolytes and gels than needed for four days.

Excellent Design

Very well designed pack with feature where it counts to achieve low weight with great structure and support. Only improvement would be a little more webbing length on the waist belt.

3-5 day trips

I could not be more pleased with this purchase. For backpacking in the Frank Church Wilderness and Bob Marshall, on volunteer or personal trips, this is my go to pack now. Comfort on my back, minimal weight, durability, it is the best backpack I own and first experience with OV. Used for more than 500 miles, no issues. When on trail crews the water bladder holder works great along with the capacity for my essentials out in the field. Light to continuously pick up and place down throughout the day.