Exalt Paintball FreeFlex Knee Pads - Grey Pass-through retention strap keeps pad in place and resists sliding and twisting out of place mid-game. / airflow Dense, absorptive molded padding protects knee against impacts during sliding and kneeling Integrated memory foam knee cup molds to the wearer's anatomical profile for extreme comfort Retention strap is entirely removable and rotatable--velcro strap adjustment won't irritate or inflame skin. Adjustable velcro retention strap can be rotated so adjustment system is concealed behind pad--no more accidental loosening or detachment.