Add some weight to your leather ball stretcher. This guy is made with soft leather, sewed into a pouch and filled with weighted pallets. This one inch thick ball stretcher gives a nice tug as it weighs down on your balls casing them to stretch over time.
The small measures 6.5 inches long and weighs .16kg.
The medium measures 7 inches long and weighs .12kg.
The Large measures 7.25 inches long (double snap options) and weighs .14kg.