【Excellent Insulation Performance】NCVI kids thermal cup features 4-layer insulation technology that keeps milk warm/cold for 6 hours. Perfect for daycare, outdoor play, or travel-your toddler enjoys fresh, comfortable drinks anytime 【Premium 316 Stainless Steel Interior】Made with medical-grade 316 stainless steel (superior to 304), this 10oz toddler cup offers exceptional durability and drop resistance. 100% BPA-free ensures your baby drinks safely. Built to last through years of daily use and countless drops 【Innovative Spill-Proof Design】Features anti-splash safety straw with weighted stainless steel gravity ball that works at any angle-even upside down! Food-grade silicone straw withstands repeated high-temp washing without rust. No more messy spills in car seats, strollers, or diaper bags 【Toddler-Friendly Ergonomic Design】Detachable handles sized perfectly for little hands (ages 1-3 years) promote self-drinking independence. Includes adjustable shoulder strap for on-the-go convenience. Lightweight 10oz capacity is ideal for toddlers-not too heavy when full, holds enough for 2-3 hours of play 【Easy Maintenance】Dishwasher-safe cup and lid save busy parents time. Straw and gravity ball are hand-wash friendly (heat-resistant to 394°F). Wide mouth design makes cleaning effortless NCVI Kids Stainless Steel Straw Cup for Toddler 1-3 Years Old, Training Straw Cup Toddler with Handle and Shoulder Strap Insulated to Keep Cold or Warm for Water/Milk/Drink Spill Proof, Blue 10floz