Find a variety of Mason jar sleeves and bottle kits. These silicone sleeves assist in making these jars easy to grip and provide a safe way to hold contents that are cold or hot. They’re also ideal in transforming Mason jars into kid-friendly drinkware. DIY bottle kits include silicone nipples, silicone sleeve, and a plastic cap for 4 oz and 8 oz bottles. Available in green and purple colors. Low prices and wholesale pricing on individual and bulk orders.