Tredstep Pro G2 Half Chaps Black. Calf = 16in, Height = 17in Designed for today's competition rider, the Pro Gaiter offers elegance and style with a contoured fit that allows flexibility of movement, incorporating Tredstep's exclusive Stretch Leather, ensuring riders can achieve a secure leg position at all times. The Pro Gaiter is the choice of top riders worldwide who are looking for a superior fit and appearance of a custom boot. The Pro Gaiter goes perfectly with the Giotto Paddock Boot from Tredstep, however it looks right at home with any short, smart boot, whether you are riding at home or in a competition.