Engineered with integrated, dual-density stretch zones, stabilizing ribs, and internal dimpling, the X-O cap offers a sleek and secure fit.
“The cut of the X-O cap is perfect. It doesn’t ride, it doesn’t wrinkle. It’s not completely over my ears, so I can hear.” – Michael Phelps
- Exo-Core Technology : Combines 2 thicknesses of silicone for maximum performance
- Internal dimpling and stabilizing ribs prevent movement and wrinkling and keeps the cap in place
- Works in conjunction with our performance Compression Cap to improve the hydrodynamic shape of the head
- Reusable hard case packaging
- F.I.N.A. approved
- Designed in Italy