Increase muscle efficiency when the heat is on! The FINIS Snorkel Cardio Cap replicates high altitude workouts. It improves breathing by teaching a deeper technique, ideal for high anxiety and race day environments. Intercostal muscles are also strengthened through forced inhalation and exhalation. This cap is specifically designed for compatibility with the FINIS Original Adult and Jr Swimmer's Snorkel.

• Increases muscle efficiency when oxygen levels are low
• Replicates high altitude workouts; Increases amount of red blood cells
• Improves breathing over time; Deeper breathing technique for race day
• Increases lung workout load by 40%
• Perfect to add a challenge for technique oriented and endurance sets