KEY TECHNOLOGIES JDP TechnologyStanding for Joint Dispersion Protection, this unique design deflects heavy impact energy away from the joints and into the surrounding foam! This is a pro-preferred technology amongst NHL players today and provides players with elite-level contact protection. PROTECTION Sternum Molded Plastic Front Panel Perforated Standard Foam Belly Guard N/A Spine Guard Molded Plastic Rear Panel Standard Foam Shoulder Caps JDP Technology, Molded Plastic, Standard Foam Bicep Guards Molded Plastic, Standard Foam Collarbone Standard Foam, Plastic Insert CONSTRUCTION Front Panel 1-Piece Rear Panel 1-Piece Biceps Length Adjustable, Floating Liner Brushed Nylon STRAPPING SYSTEM Torso 2" Elastic Nylon Biceps 1" Length Adjustable Strap, 1.5" Elastic Nylon Bicep Strap