Takes the aches and pains out of frequent kneeling and crawling. Protects sensitive joints from pebbles and debris. These are original replacement knee/elbow pads for use in padded military jackets, shirts and pants. Includes 4 pads that can be used for knees or elbows. Made to strict U.S. military specs. Refresh your tactical clothing or workwear with a high-density foam upgrade. Great for motorcycle jackets and pants, too.