Expand your gear, extend your adventures The lightweight backpack of your dreams is here. Meet the versatile pack that hauls it all. The Flex Capacitors is a beast of backpacking pack, constructed from durable nylon for rough conditions in the backwoods and built with adjustability in mind. Loosen the expanding horizontal gussets for an additional 15-20L of cargo capacity on longer backpacking trips, or cinch it tight for smaller, compact loads on fast summit days. Plus, ample quick-stash solutions on the straps, sides and bucket lid ensure there are plenty of places to store your mid- trail essentials. However, you pack it, the Y-Flex suspension adds support so this lightweight backpacking backpack can hit well above its weight class. Flex Capacitor Rain Cover sold separately. Features Lightweight Y-Flex Suspension provides superior increased support. 20L adjustable volume to tailor both to extended backpacking trips or shorter day trips. Hydration sleeve doubles as removable summit sack. Dual adjusting shoulder straps tailors pack fit to your torso. 2 hydration pockets on shoulder straps. 2 stretch mesh side pockets to keep essentials close at hand . Zippered hip belt pockets for easy storage. U-shaped top access zipper for easy access while backpacking. Lightweight backpack. Materials 100D Nylon Honeycomb/420D Oxford Tech Specs S/M Torso Capacity: 40-60L / 2441-3661 in3 Weight: 2 lbs 12 oz / 1.23 kg Torso Fit: 16" - 19" / 41 - 48 cm Hip Fit with S/M waist belt: Dimensions (H x W x D): 25" x 12.5" x 12.5" / 63 x 20 x 32 cm Suspension: Lightweight Y-Flex M/L Torso Capacity: 40-60L / 2441-3661 in3 Weight: 3 lbs 2 oz / 1.4 kg Torso Fit: 18" - 21" / 46 - 53 cm Hip Fit with M/L waist belt: Dimensions (H x W x D): 27.5" x 8.5" x 12.5" / 70 x 22 x 32 cm Suspension: Lightweight Y-Flex