THIRD PARTY TESTED FOR SAFETY: Free of lead, BPA, phthalates, chemicals and toxins. This means our kids cups are vacuum sealed with glass beads instead of lead. NO CHIPPING OR PEELING: Each unbreakable toddler cup is powder coated so it won’t chip, peel or melt. We’ve gone through countless rounds of testing, tooling and trials to improve the quality of our stainless steel cups. SUPER EASY TO CLEAN: lids and straws are dishwasher safe in the upper basket. Hand washing the mugs is recommended to keep the colors vibrant. FOOD-GRADE MATERIALS: Only food grade silicone and 18/8 stainless steel are used for your kids. We don’t skimp on quality because our own children use the same cups as your children.