Replacement Cushion Inserts for AP16® Knee Pads ProKnee® AP16® Cushion Inserts are replacement cushion inserts designed exclusively for ProKnee® AP16® All Purpose Knee Pads. They restore the original cushioning performance while fitting directly into the existing pad structure for a secure replacement. Available in Two Cushion Thicknesses Choose from 5/8" or 1" thick cushion inserts to match your preferred level of support and cushioning. Both options are designed to fit all sizes of AP16® All Purpose Knee Pads without modification. Complete Replacement Kit Each replacement set includes one pair of cushion inserts along with cable ties for secure installation. The direct-fit design allows worn inserts to be replaced quickly, extending the service life and comfort of compatible ProKnee® Knee Pads.