18/8 stainless steel, double wall insulated, and powder coated are the perfect size for toddler hands. Can be used with lid and straw to help reduce spills, with lid without the straw, or without a lid. Each cup comes with one reusable silicone, flexible straw in the same color as the cup. Cups and components are free of BPA, phthalates and lead. 8.5 fl. oz. Available in green, blue, pink, and purple.