SNUG is a simple, spill-proof, kidâs drinking lid that fits any cup, anytime, anywhere. Made from 100% silicone, SNUG is dishwasher-safe and can be sterilized. Choose ANY cup, stretch SNUG over the top of it, and youâve got a spill-proof cup to hand to your kid. Take your kids to a restaurant, party, friendâs house, etc., without worrying theyâll spill. SNUGS arenât just for parents. If youâve got friends with kids, own a restaurant, run a daycare, or just have some little relatives that occasionally visit, keeping some SNUGS around can come in quite handy.