HYDRO FLASK - Standard Mouth Insulated Sport Cap - Insulated Flask Lid for Enhanced Temperature Protection - BPA-Free and Toxin-Free - Black

Enjoy optimum drinking temperature for hours: This lid is insulated for enhanced temperature protection. Standard Mouth Insulated Sport Cap is designed to keep water in your HYDRO FLASK bottle ice cold, sip after sip This Sport Cap is compatible with our Standard Mouth bottles: [532ml (18oz), 621ml (21oz), 709ml (24oz)] The Standard Mouth Sports Cap allows you to drink with one hand: The cap is easy to use, whether you're going to work or taking a morning yoga class. This cap is not intended for use with hot liquids and is not leak-proof High Quality and safe materials: This lid is BPA-Free and Toxin-Free that is easy to clean and is dishwasher safe. It's quiet with a "no whistle" valve 100% Customer and product satisfaction warranty: We stand behind our products and have great faith in our products. HYDRO FLASK is committed to high standards of durable and robust materials. HYDRO FLASK guarantees this product with a limited lifetime warranty against manufacturer defects