UCO ClipCap Accessory Cap
Here's what other sites are saying:
The unique ClipCap accessory cap incorporates a spring clip to attach your bottle to a backpack, belt loop, or almost anything. The ClipCap is BPA-Free and is made from durable, food grade materials. The ClipCap fits the Klean Kanteen 18, 27 and 40 oz. loop cap bottles (Items 77886, 77884, 77890), the Klean Kanteen 18 and 40 oz. sport cap bottles (Items 77885, 77889), the Klean Kanteen 12 oz sippy bottle (Item 78191) and the Klean Kanteen 27 oz. wine carafes (Items 78194, 78195). The ClipCap accessory cap does not fit Klean Kanteen wide mouth models.Attach to your belt loop or pack.No carabiner to rattle or lose.Dishwasher safe.