Lost your water bottle lid? No problem. This replacement lid is compatible with the 18oz. Icon™ Kids Water Bottle with Straw Lid (IS251), however it also fits the 18oz. Icon™ Kids Water Bottle with Spout Lid base (IS250) if you feel like changing your lid. Whether you're replacing a lost lid or just need a spare, this lid is designed for a perfect fit and long-lasting durability. Dishwasher safe (top rack dishwasher safe for added convenience). LDPE straw stem is sold separately on thermos.com. Shop all Thermos® Accessories & Replacement Parts or Contact Us *Tritan is a trademark of Eastman Chemical Company.