A double walled, vacuum-insulated body is made of 18/8 stainless steel which insulates cold drinks for up to 24 hours and hot for up to 6 hours. The double wall also means the exterior will stay a comfortable temperature to hold, while a sturdy Tritan lid easily slides open and closed for one-handed drinking. This tumbler is stunning rose gold with a metallic finish, making it a stylish piece as well as functional. Perfect for taking smoothies, herbal teas or any hot or cold refreshment. The bottle is suitable for a standard size cup holder and is BPA free for peace of mind. Capacity: 565ml/20fl oz.