Engineered Mesh Upper: Enhances breathability and fit for all-day comfort

Active Cap offers a balance of torsional rigidity and supple flex from tip to tail for all conditions control

Made with recycled  fabric equal to 7 post-consumer plastic water bottles

Fine Gauge Knitting: Unprecedented durability and our unique “put it on

The Havok XC3 delivers everything needed to create chaos and separate yourself from the competition

Nathan Push-Pull Flask Replacement Caps - 4PK Mizuno Engineered Mesh Upper: Enhances breathabilityReplacement Race Caps for Nathan flasks. Features: Sold in pack of four caps Compatible with Nathan 10oz flasks Dishwasher safe NATH 4589N Push Pull Caps 4 pack