Come and Check Our Branding Solutions.We insulated water bottles adopt double-layer insulation wall design and vacuum sealing. This means you can enjoy your favorite hot and cold drinks for a long time, no matter what season you're in. It can keep hot drinks hot for 24 hours and cold drinks cold for 48 hours. Advanced technology prevents heat transfer to outer wall, protects your hands from the temperature of beverage. Pls check inventory and detailed info before placing your orders.