Klean Kanteen S-Biner #3 The carabiner is an "S" shape and has two opposing gates to make it easy to connect two things together; just two snaps and you're connected Rated to hold up to 25 lbs Rugged stainless steel made by Nite Ize 2.65 x 1.25, 1.1 ounces Perfect for backpacks, duffle bags, tote bags, even belt loops