The Contigo West Loop Autoseal RVS is a stylish stainless steel insulated beaker. You can operate this isolating cup with één hand. Press the button to open and release it to close it again. The Autoseal automatically closes between sips so you can not spill. The double wall with vacuümisolatie ensures that your hot drink stays warm for up to 4 hours and your cold drink stays cold for up to 12 hours.