Anatomical Stretching Charts (set of 3) Each chart is a huge 2ft x 3ft size (23.4 x 33.1 inches or 594mm x 841mm), printed on high quality 170gsm gloss art paper. Each chart contains vital stretching information on why you need to stretch, how to stretch properly and a set of rules and guidelines to help you get the most out of your stretching. Plus a full description of how to perform the stretch; a detailed list of all the muscles involved; and a list of sports injuries that the stretch will help with.