100% Leakproof.Keeps 12h Hot / 24h Cold.Double wall: internal and external walls made from stainless steel 304 (18/8).Inner part of the lid is made of stainless steel 304 (18/8).Internal wall without any coating or lacquer.BPA free.Approximately 26cm high x 7cm diameter. Care & Use Do not put in the dishwasher, oven, microwave or freezer. Clean with warm soapy water and/or with baking soda using a non-abrasive element. Careful, hot liquids or hot foods can burn: use the product with caution. To prevent spills and leaking, properly and fully tightened the lid to ensure an airtight seal. Transport upright is recommended.