Patented high-flow valve: Allows quick, one-handed sipping for uninterrupted performance
Fits all Nathan hard flasks: Compatible with 10oz, 12oz, and 18oz models for versatile use
BPA-free construction: Ensures safe hydration with every use
Dishwasher safe (top rack only): Simplifies cleaning and maintenance
Pack of 3: Convenient for stocking up or replacing worn caps
Summarized by Shop
Built for runners who want quick access to fluids without losing focus, the Race Caps 3-Pack features our patented high-flow Race Cap valve that lets you sip on-the-fly with one hand. Fits all 10oz, 12oz, and 18oz Nathan hard flasks — perfect for stocking up on replacements or swapping out for easy cleaning.
Pack Size
3 caps
Material
BPA-free plastic
Color
Silver
Compatibility
Fits 10oz, 12oz, and 18oz Nathan hard flasks
Pattern
Solid
Dishwasher Safe
Top rack only
Summarized by Shop
4.8
10 ratings
5
4
3
2
1
Muy buenos
Vicente · December 11, 2025
Needed bottle caps
The ordering was easy. I think that the delivery was a little slow but the order arrived in good shape and it was exactly what I ordered.
J
JERRY · July 18, 2025
Great and sturdy
They’re a great help when running. Can actually drink water while running because of them.
