The Hazard4 EVAC Watson Lumbar-Chest Sling rotates around the large padded strap from lumbar area to chest, with MOLLE webbing on main strap for pouches, etc. The padded rear area gives fast access to tablets, netbooks, etc. Thermoformed back padding for ventilation and durability. Two large side-pockets fit a 1-liter bottle, and a large front pocket has an organizer for pens, knives, small tools, etc.
Other features include a front velcro patch area, large top/bottom grab-handles, bottom compression strap, fuzzy-lined inside edges for attaching holsters/patches, etc. and an adjustable stabilizer strap to securely hold the bag to the body.
See more at http://hazard4.com/products/packs/evac-slings/watson.