The Hydro Flask Standard Mouth Sport Cap makes drinking from your Hydro Flask super easy while still maintaining the drink's temperature. With a soft spout, this sport cap offers an increased flow rate for an easy one-handed use. Constructed from polypropylene and silicone, this added Hydro Flask sport cap is super durable. Use your Hydro Flask for any activity with the Hydro Flask Standard Mouth Sport Cap.
Increased flow rate
Made from BPA-free
Quiet "no-whistle" valve
Insulated for enhanced temperature protection
Designed to fit 12, 18, 21 and 24 oz. standard mouth Hydro Flask water bottles