The sturdy stainless steel bottle body is equipped with a screw-off bottle cap. Both the inner and outer walls are made of stainless steel. Double-layer vacuum insulation. It has a cold retention time of up to 24 hours and a heat preservation time of up to 12 hours, making it very suitable for holding hot coffee or cool ice water. This reusable water bottle helps reduce the impact on the environment and allows you to bid farewell to the constraints of disposable plastic bottles. It is the ideal choice for environmentalists.