... 1.Made of 100%silicone; 2.Tasteless,nontoxic,hygienic,eco-friendly; 3.Good flexibility,ametabolic; 4.Color changeable Silicone Baby bottle sleeve ... *Made of food grade silicone with FDA LFGB certificates *Color changeable,heat discoloration. *Tasteless,nontoxic,hygienic, eco-friendly; * ... -stick,anti-slip , Easy-Cleaning * Welcome for customized design. . Silicone Baby bottle sleeve