This hydration insulated water bottle by Built has been designed from BPA free stainless steel with a 480ml capacity, perfect for staying hydrated whilst on the go. Crafted with a double walled, vacuum-insulated body, this water bottle has been made from 18/8 stainless steel which insulates cold drinks for up to 24 hours and keeps hot drinks hot for up to six hours. The double wall design also means the exterior will stay a comfortable temperature to hold, while Perfect Seal technology ensures that the lid is leak-proof.