ShockGUARD® impact-absorbing inserts join forces with D3O® material. If you require inside-uniform knee protection then choose the Alta ShockGUARD® full-size insert of D3O® material. Our insert fits most popular uniform pants and provides you with the extreme impact resistance of D3O® in a convenient portable, lightweight insert.  WE'VE GOT YOUR KNEES™ FEATURES: D30® Impact Technology containing "intelligent molecules" used for high-performance shock absorption Strong, durable and flexible knee pad insert design Comfortable stay-in-place design fits most pants