The iconic S-Biner design allows quick and easy attachment using its unique double-gated design. The high-quality, durable stainless steel body is available in a variety of sizes that are individually weight-rated, creating a perfect way to hold, secure and connect everything from keys to water bottles to gear. Made of high quality, weather-resistant stainless steel, this ultra-handy accessory with its dual spring gates will hold, secure and connect everything from keys to water bottles to gear. Smaller-sized S-Biners are excellent for connecting two zipper sliders on backpacks, duffels and suitcases.