Here's what other sites are saying:
Why compromise and choose between a loop cap and a sports cap? The Hydro Flask Narrow Mouth Sports cap has both. Now you can drink with ease on the trail or at the gym and clip it on wherever convenient. Fits all Hydro Flask Narrow Mouth bottles.
- Ramsey Outdoor
A drink while running or hiking shouldn't drench your clothes or slow you down, so Hydro Flash made the Narrow Mouth Sports Cap to fit your 18oz or 24oz narrow-mouth bottles.
Hydro Flask Narrow Mouth Sports CapOur narrow mouth sports caps were designed with the mover and shaker in mind. The convenient pop top makes drinking on the go a piece of cake. We spent some serious time creating a sports top that fits your needs, the flow is great and the attachment loop makes it easy to clip your Hydro Flask to just about anything! The narrow mouth sports cap fits our 18oz. and 24oz. narrow mouth bottles.Our Sports Caps are made from polypropylene, which means they are BPA-Free.
- River Sports Outfitters
Hydro Flask Narrow Mouth Loop Cap
Hydro Flask Standard Mouth Loop Cap
Hydro Flask Standard Mouth Sports Cap
Guyot Designs SplashGuard
Platypus Bite Valve Cover
Nalgene Insulated Water Bottle Sleeve
$10 - $17
Platypus Bite Valve and Drink Tube Insulator Kit