Women's Borealis Women's Surge Women's Recon Women's Pivoter Women's Jester Women's Vault Buying Options Buying Options Buying Options Buying Options Buying Options Buying Options Customer Reviews 4.5 out of 5 stars 54 4.6 out of 5 stars 60 4.6 out of 5 stars 39 4.4 out of 5 stars 28 4.7 out of 5 stars 10,842 4.6 out of 5 stars 126 Liter Size 27 L 31 L 30 L 28 L 22 L 26 L FlexVent suspension system certified by the ACA ✓ ✓ ✓ ✓ ✓ ✓ Organization External bungee, two water bottle pockets and multiple spots internally Two water bottle pockets and multiple spots internally External pocket, two water bottle pockets and multiple spots internally External pocket, two water bottle pockets and multiple spots internally External bungee, two water bottle pockets and multiple spots internally Two water bottle pockets and multiple spots internally Dedicated and Protective Laptop Compartment ✓ ✓ ✓ Internal Sleeve Only Internal Sleeve Only Internal Sleeve Only Laptop Size 12.5" x 11" 14.5" x 11.5" 18" x 10.6" 11.5" x 11" 12.75" x 11" 11.5" x 11" Additional Features Stand-up design, U-pull zippers, 360-degree reflectivity, removable waist belt and side bungee and bottom compression straps Stand-up design, U-pull zippers, 360-degree reflectivity, removable waist belt and bottom compression straps Stand-up design, U-pull zippers, 360-degree reflectivity, removable waist belt and two side and bottom compression straps Stand-up design, U-pull zippers, 360-degree reflectivity and two side compression straps Stand-up design, U-pull zippers and 360-degree reflectivity Stand-up design, U-pull zippers and 360-degree reflectivity