BMZ Golf Insole Asitore Golf Booster [Grabs the ground with your toes and leads to a stable state] When in doubt, this is it! Increased flying distance Stability Reduced burdenToe thickness: 2. 5mm, weight: Approx. 31. 0g (one foot) The arch of the foot allows you to grip the ground with your fingers, which stabilizes the base and increases flight distance Heel hold property A booster that supports mobility by guiding you to a forward leaning posture. The artificial leather provides breathability and grip. Perfect for golf! Product model number: Acitore Golf Booster Color: Black Size: XS (21. 0 22. 5) Material: Faux leather