Imported food grade silicone materials, it's BPA free, high temperature resistant, odorless andnontoxic, do no harm to the body, especially to frail kids. Adopt dust-free and disinfection technology to control the quality strictly and conform to the hygiene and safety standard, can be used trustingly. It's universal to various kinds of water bottles in the market. Don't worry the metal or solid plastic hurt your teeth,especially children, silicone cover protect your teeth from the hard bottle rim. Features - Color: Transparent - Material: Silicone - Size: 6.6 x 3.4cm - Imported food grade silicone materials, it's BPA free, high temperature resistant, odorless andnontoxic, do no harm to the body, especially to frail kids. - Adopt dust-free and disinfection technology to control the quality strictly and conform to the hygiene and safety standard, can be used trustingly. - Don't worry the metal or solid plastic hurt your teeth,especially children, silicone cover protect your teeth from the hard bottle rim. - It's universal to various kinds of water bottles in the market. Good choice for your kids. 5 x Straw Tips Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store