About this item Four section armor. It contains two shoulders and two elbows pieces. It can easily be inserted in most jackets that contain removable armor pockets. Made of injection-molded plastic which is stitched to thin piece of foam. Foam provides extra cushion from any accidental impact. Compatible with most jackets that have removable foam armor. CE Approved/Marked Armor. Extremely light weight. All 4 pieces weight is less than 10oz on average.