Simple device can increase your lung capacity and improve oxygen intake, boosting endurance and reducing recovery time
Designed for athletes in excellent physical condition, looking to boost training and exercise regimen, and advanced performing artists, singers, and musicians
Independently adjustable inhale and exhale controls
Hand grip for comfortable use; includes detailed instructions for proper training
Recommended for users age 13 and up

Technical Details

Size (LWH): 9.1 inches, 4.1 inches, 2.5 inches
Product Details
Product Dimensions: 9.1 x 4.1 x 2.5 inches
Shipping Weight: 0.5 pounds (View shipping rates and policies)
ASIN : B00076VPV0