S1 - Gen 4 Pro Inner Knee Cup Replacement ( sold as a pair ) | Adult Knee Replacement Pad Insert from S-One 61mm to 65mm Wheels Wheels: Sonar Zen 57mm (color

Wheels: Sonar Zen 57mm (color matching)

Pre-lubricated with Speed Cream™ racing lubricant

measure hand circumference at the knuckles and match to the sizes listed below:

ATF formula for smooth roll

S1 - Gen 4 Pro Inner Knee Cup Replacement ( sold as a pair ) | Adult Knee Replacement Pad Insert from S-One 61mm to 65mm Wheels Wheels: Sonar Zen 57mm (colorS1 Gen 4 Pro Inner Knee Cup Replacement (sold in a pair ) Adult Knee Replacement Pad Insert from S One S1 Pro Knee Pad GEN 4 inner foam replacement for all sizes. If your knee pads are feeling like they are not absorbing as much impact as they did when you first got then you can replace the inner foam to give them some new bounce! The streamlined inner foam system for the Gen 4 Pro Knee pad is designed to absorb impact and promote stability by molding