The Thermos Foogo Vacuum Insulated Soft Spout Sippy Cup is a Phase 1 product for babies six months and older. It features Thermos vacuum insulation technology for maximum temperature retention that will keep their drinks cold for up to 6 hours. Made from durable, BPA-free double wall stainless steel, this cup features a soft spout that is gentle on sensitive gums, while the ergonomically-designed easy-grip handles help your baby gain confidence in holding a cup and learning to drink. With a seven-ounce capacity, it keeps liquids cold for up to six hours. Dishwasher safe.