Granite Gear Slurpin Dog Bowl The Granite Gear Slurpin Dog Bowl was designed to look and perform as if traditional dog bowls. It has circular shape that tapers inward, and stabilizes the outer walls when the bowl is filled. It is a collapsible and lightweight dog bowl. You need to simply fill with water and it will take on its bowl shape. It is is durable and will not break down over time. When your dog is hydrated just empty and stuff it in his/her pack. It is available in three sizes, small, medium, and large. So don't hit the trail without one Granite Gear Slurpin Dog Bowl.