Grizzly & Black Bear Approved.Lighter for backpacking when every ounce counts.Larger capacity for the space you need.Extra wide opening provides full access for loading, unloading and finding items.Innovative patented design so you can open and close the lid without tools.Super rugged transparent poly-carbonate housing resists impacts without shattering.Built in guides keep tie down straps in place so extra carrying case in not needed to attach to backpack.