Flex On Safe On Stirrups with Inclined Ultra Grip Tread Colour:Frame Navy Tread Grey Shock Absorbers Grey Chondroitin Sulphate and Hyaluronic acid Chondroitin Sulphate and Hyaluronic acid (HA) are well known for their support for the health of both cartilage The Le Chameau Men's Chasseur Neoprene Lined Wellingtons is a popular choice due to the different calf sizes and full length zip The safety arm has a mechanism designed to give way when required such as a rider fall and is easily screwed back in once it has given way the stirrups help to reduce impact on the sensitive areas of the legs while providing the rider with ultimate grip encouraging a correct and grounded foot position in the stirrup iron