Klean Kanteen Classic Stainless Steel BPA Free Bottle plus Carabiner #4 Bottle Clip Large 1.75" (44mm) bottle opening fits ice, easy filling and pouring. Electropolished bottle interiordoesn'tretain or impart flavors. Safe, durable, high quality materials. Made of 100% 18/8 Stainless Steel. BPA Free. Portable, reusable, and recyclable. Connect yout bottle to your keys or bag with the high quality S-biner clip #4. Includes 40 Oz Bottle in Channel Island with Sports Cap 3.0 PLUS S-Biner #4 Steel Carabiner Bottle Clip