The Corkcicle Heathered 25oz Canteen celebrates the spirit and resilience of those who live their life for the water! It is crafted from stainless steel with proprietary triple insulation. It also has patented easy-grip flat sides and a no-slip bottom. Keeps drinks ice cold for up to 25 hours or hot for up to 12 without freezing or sweating. Cold even longer for drinks containing ice.