Adjustable silicone lid, transforms any glass into a tumbler in no time. Practical to have in the diaper bag, at home, everywhere. Use it at restaurants, picnics, on the road and at home. This lid makes life easier for parents! 100% food grade made for your little ones' hands, easy to grip. Promotes autonomy. For the interview of our products  in silicone , We YOU recommend of THE wash with of soap And A cloth wet Or simply of THE wash In THE dishwasher . ​ ​ Food grade silicone BPA free Dishwasher safe Safe for little ones