The Chug Cap is made for quick hydration. The wide spout lets you take in fluids fast when you need them most. Chug Cap’s versatile design features a convenient spout cover which protects against spills mid workout, and screws down securely for a leakproof seal when you’re ready to call it a day. Chug cap features new TK Closure™ internal thread design to keep drinks ice cold. Get back in the game quick with Chug Cap. Compatible with TKWide Klean Kanteen bottles only.