High-Quality Materials - These stainless steel sippy cups are made of 304 food grade stainless steel, unbreakable, durable and Eco-friendly, which has no chemical odor and BPA free, won't rust after long time using. Good Sealing & Leak-Proof - The silicone sealing ring on the lid makes the toddler cups leak proof. When you close the lids, the water in toddler sippy cups will not leak even when tipped over. And 2-in-1 lids provide two way for drink, sipping or drink by straw. Non-Slip & Heat Insulation - The upgraded thick silicone sleeves designed specifically for small hands, not only prevent the smoothie cups from falling, but also protects kids hands from hot or cold beverages, making tumblers with lids and straws much easier and safer to hold. Unbreakable & Convenient - Our Stainless steel Toddler cups with lids are unbreakable, lightweight and safe, can withstand multiple falls without damage. These travel mugs with lids is dishwasher safe, easy to clean. The Stackable design makes kids cups storage easier without taking up more space. Suitable for kids use or gifts - Our sippy cups with straws and lids are suitable for serving hot or chilled water, tea, milk, coffee, juice, ice cream. They are convenient for kids everyday household and outdoor use like home, school, party, camping, hiking etc. Also a pretty nice gift for your family, friends, colleagues or classmates.