1.Capacity & Keep Water Cold or Hot20.3 OZ ( 600 ml ). The thermos kids are suitable for Kids, Teens. The 5 walled vacuum sealed structure made the insulation more effect, keep hot up to 24 hours and cold more than 6 hours. 2.BPA FREE MaterialThe water bottle with straw made by 316 Stainless Medical Grade Steel, very different with normal 18/8 stainless steel. Thermos water bottle is fully resistant to oxidation and corrosion. Also, the beverage can be kept with its original taste. 3.Multi-Functional Bottle Cap Stainless steel water bottlel with 3 kinds of cap style that will be suitable for the kids age from 1 to 10. Color of the silicone on the cap will be change to Pink if water temperature over 122 (50 ), or the color is Purple. That is great a reminder to parents what is best time to let your kids drink water. 4.BPA FREE Straw & Opened By One HandThermos funtainer with push-button lid is convenient, leak-proof and hygienic - just press once and the lid flips up to reveal the straw. The straw is gentle on your babys gums, palate and teeth,soft to bite down on, but enough to resist teeth. 5.Carton 3D Effect Patten & Cute Bottl Sleeve3D patten on the bottle surface with sweat-proof design won't leave water rings and kids water bottle is easy to grip and hold.