These handy Spill-Proof Replacement Valve 2 Pack fits all Second Nature Stay Kool cups. Damaged or worn valves can limit the performance of your spill-proof cup- but with these valves, it's easy and cheap to replace them! Easy to clean. Made of durable silicone. 2 pk. Top rack dishwasher safe.

Discount Pricing: Second Nature has requested that we sell this item at the suggested retail price. Although we can't discount this item, we hope you'll appreciate it as a quality addition to our store!