Unveiling the 500ml Aluminum Water Bottle is manufactured using Aluminum and is single-walled. The bottle is slender with an insulated screw cap which has a loop to make carrying the bottle, convenient. It also features a matching colored carabiner, attached to the cap, so the bottle can easily be attached to your bag or backpack whilst traveling or on the road. *Please note that this product is not microwave or dishwasher safe*\n