Designed with stainless steel pivots and a flexible strap, this cap moves when you do. Plus, it’s made with Honeycomb Insulation™ to keep drinks cold up to 24 hours or hot up to 12 — no matter what the weather’s doing outside. Compatible with all Wide Mouth bottles Honeycomb Insulation™ helps keep cold drinks cold and hot drinks hot Durable, stainless steel pivots allow the strap to move easily BPA-Free and Phthalate-Free