Food grade silicone bottle sleeve securely fits 2nd / 3rd gen glass bottles, offering protections and anti slip grips for safe feeding Ideal for parents seeking sturdy, accessories to safeguards infants ' feeding equipment during daily use and travel Easy to clean silicone construction resists stain and odors, featuring dishwasher safe durability for repeated sterilizations cycles Maintains comfortable bottle temperature during feedings while protecting hands from heat transfer in homes, daycare, or outdoor environments Specially contoured design hugs bottle surfaces tightly, featuring ergonomic handles and shock absorbing structure to accidental drops and breakage