The CamelBak Charge LR is an incredibly comfortable, light and conformable hydration pack, which features their lumbar Antidote reservoir, which is situated at the bottom of the pack.
The design places the water lower on hips and back for stability and comfort. The pack becomes part of your back, at least figuratively, as it conforms to the shape and oddities of your body, and it doesn’t bounce around much, especially compared to conventional designs.
The Charge LR uses lightweight ripstop fabric, has great organizational pockets, a softly padded back panel and hip belt, and uses their 70 oz (2 L) Antidote Reservoir.