38mm SGR Tape is for use round the bottom of the shin pads. Shin Guard Retainer Tape. Premier Sock Tape “Shin Guard Retainer Tape” has been developed over the past eight seasons as a replacement for the very restrictive zinc oxide tapes that have been used in the past to secure the socks below the shin pads. It has a 38mm width and easy tear construction for player convenience. The SGR tape is made from a special material that stretches when warm, this heat stretch property makes the SGR tape more comfortable to wear and more close fitting around the shin. Premier Sock Tape SGR Tape is now worn and trusted by many Premier League Teams and players alike all of which say they wouldn’t want to wear anything else!