Primary: Stainless Steel & Plastic

Instructions for use: Wash before using. Owala brand products are designed to be as Simple and easy to clean as possible. Best Practices for cleaning each part May vary. Lid: All lids are top-rack dishwasher safe. Remove the gaskets (From underneath the flip Cap and just above the threading of the lid) And the straw. Place gaskets in the utensil Basket and the straw and lid on the top rack. If You hand wash, use a straw brush to clean the Straw and straw portion of the lid. Always Ensure all seals and gaskets are installed and Properly sealed before use. Cup: Hand washing is recommended to Preserve its finish. Do not use harsh chemicals (Such as bleach, abrasives, etc.).