Finis Snorkel Cardio Cap Compatible with Finis Snorkel Original and Glide Simple Shape Sizes listed are US mens

Sizes listed are US mens

The openback offers greater freedom of movement and may be preferred by swimmers with arched backs

panoramic underwater view

Glide Snorkel and Swimmer's Snorkel Jr

Finis Snorkel Cardio Cap Compatible with Finis Snorkel Original and Glide Simple Shape Sizes listed are US mensDesigned specifically for the Adult and Jr Swimmer's Snorkel, the Snorkel Cardio Cap can be used for hypoxic training, which increases the ability of muscles to work better when oxygen levels are low. The Snorkel Cardio Cap replicates higher altitude workouts. The Snorkel Cardio Cap improves breathing by teaching a deeper technique for high anxiety and race day environment. Using the Snorkel Cardio Cap is also a great way to strengthen intercostal