Aquasphere MP X-O Cap

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

"The swim cap is very important to a swimmer's performance. We've created a cap that's going to provide maximum control of the hair with a minimum wrinkles for the most streamlined movement through the water." - Coach Bob Bowman

• Exo-Core Technology: Combines two thicknesses of silicone for maximum performance
• Internal dimpling and stabilizing ribs prevent movement and wrinkling and keeps the cap in place
• Hydrodynamic 3D shape
• Works in conjunction with our performance Compression Cap to improve the hydrodynamic shape of the head
• Performance cut
• Reusable hard case packaging
• FINA approved
• Designed in Italy
• Latex-free
• Pair with the Compression Cap to improve the hydrodynamic shape of the head and hair.