‣ Double insulated to keep your drink cool/warm for hours ‣ Made with sleek & durable stainless steel ‣ Leak-free lid and cap design ‣ Fits in a car cup holder ‣ 2X Mixing Power via the Built-in Lid Blending Tool & X-Large Steel Blending Ball * Handwash ONLY. WARNING: Do not put extremely hot or carbonated liquids into this bottle as pressure can build and cause the lid to pop open. This bottle is intended primarily to keep drinks cool and is not intended to be a thermos.