2pcs 37mm Squash Ball Natural Rubber Competition Training Supplies For Professional Players Trainers

--Double yellow penalty balls are professional practice and competition balls, and other colors and yellow single penalty balls are used as primary practice balls. --The squash ball is filled with rare gas. When the squash ball is hit, the gas expands due to friction and heat. --Its flying speed can reach about 150 kilometers per hour. The speed is second only to badminton, the king of speed. --Model: yellow dot, blue dot, red dot, double yellow dot --Size: 4CMDescription Type Bicycle saddle Material polyurethane Applicable models mountain sports cars size one size Color 189 black red 189 black blue 188 black red 188 black blue Package List 1 seat Note The colors deviation might differ due to different monitor settings Manual measuring please allow 1 3mm errorthank you