Our RhinoSkin™ ultralight shell does just that - performs as a second skin that is durable, breathable, wind proof and moisture resistant. Uninsulated, it packs up small enough to stash in any size pack, pocket or emergency kit, yet is roomy enough to let you add layers as needed. Equipped with our PackLock™ (pat. pend.) technology to ensure a solid ride from your pack, no matter what the load