The ideal take along cup made of BPA-free and eco-friendly food grade 304 stainless steel for your family by Red Rover. Say goodbye to tacky plastic sippy cup alternatives and hello to clean, green materials for your favorite drink, water, juice, milk, or smoothies! 8 oz capacity is the perfect size tumbler for your little munchkin- baby, toddler or child! Also great for adults who want a smaller capacity drink container. The twist on lid features a silicone gasket to reduce leaks and spills and a thick silicone straw that is soft and comfortable for little mouths. Please note lid is not 100% leak-proof, so keep it upright! Can also be used as a storage container for snacks on the go by removing the straw. Use for cool and room temperature drinks only. Not for use with hot liquids as steel conducts heat. Top rack dishwasher safe, shatter proof and break resistant for long lasting indoor and outdoor use; perfect for busy families on the go!