The most modern tactical and military pants have reinforcements on the knees under which protective elements can be installed. To protect your joints
M-Tac Winter Tactical Boots Thinsulate – M-TAC
JJYING 5 Pairs Knee Pad Inserts for Pants,11×6 : Automotive
Eva Knee Pad Inserts (Pair) - M-Tac - Knee and elbow protection
The M-Tac Eva Knee Pad Inserts are designed to protect your knee joints without restraining movement and maintaining agility. Made out of 0.3 EVA
M-Tac Eva Knee Pad Inserts (Pair)
M-Tac Knee pad Inserts - for Tactical and Work Pants - Memory Foam - Elbow Pads : : Sports, Fitness & Outdoors
M-Tac Knee Pad Inserts for Men - Fitting for Construction and Tactical Pants - Memory Foam Elbow and Knee Pads for Work, Knee Pads - Canada
MS9 Men's Cargo Combat Active Casual Tactical Work Pants Trousers Jeans Black: Clothing, Shoes & Jewelry
M-Tac Eva Knee Pad Inserts (Pair) – M-TAC
: Tools & Home Improvement
HARD LAND Knee Pad Inserts 1 Pair Neoprene Lightweight Kneepad Ready Pants for Cargo Work Tactical Pants