The restrictor cap is designed to fit into the Micheal Phelps regular fit snorkels and is intended for advanced swimmers only. Only use a restrictor cap under the guidance of your coach.
Restricts breathing by 40%
Fits regular fit snorkels
Constructed of durable synthetic material
Aqua Sphere, the premier swimming equipment manufacturer for fitness and recreational swimming, aquatic exercise, and triathlons, and Michael Phelps, the most decorated swimmer of all-time, have together launched the “MP” brand.
Combining Aqua Sphere’s global product design expertise and distribution with Phelps’ experiences at the highest levels of swim performance, the MP brand features a line of technical swim products featuring proprietary technologies and performance enhancing designs for competitive swimmers.