The Breath Builder is an isometric exerciser for lungs and diaphragm muscles
This aid would be of great value to any instrumentalist or vocalist.

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 3.3 inch
Height : 1.8 inch
Length : 6.7 inch

Item Weight: 2.4 ounce (View shipping rates and policies)
Shipping Weight: 2.4 ounce (View shipping rates and policies)

ASIN : B0002F6YIK