This is a replacement lid for ION8 leak-proof water bottles. It features the same one-touch, one-handed operation and smooth flow as the original, with a leak-proof design and a safety lock. The lid comes as a complete unit with new fitted closure seals, including spout, vent, and closure seals. It is designed for ION8 small bottles, fitting models from 320ml to 600ml, and is compatible with both Recyclon and Steel bottles. This replacement lid helps extend the life of your existing bottle. Small / Medium Replacement Lid For ION8 Water Bottles - Blue