In addition to the RugbyTech registered padding design which protects the shoulders, collar bones, and upper spine, the Matador Vest also provides protection for the sternum and bicep. Conforms to IRB recommendations. Rugbytech body protection is worn by Jonny Wilkinson, Keith Wood, Peter Stringer and Paul O'Connell. Features Long body 4 shoulder pads 2 removable bicep pads 1 removable chest pad 1 neck protector pad All RugbyTech Body Protection is designed to fit snugly as an undergarment for use in rugby. It is made from lightweight 85% nylon/15% elastine material and uses high density 10mm foam for maximum impact protection. The chest sizes provided from your convenience refer to the chest size of jersey you wear.