found at Sportitude
The 2XU Timing Chip Strap is an easy-to-wear ankle timing strap for race day and is adjustable for the perfect fit. Lightweight neoprene and nylon material ensures it stays in place in comfort. It won't chafe your skin even on long races thanks to the smooth, irritation-free design. - Comfortable ankle timing strap to crush your personal best - Nylon and neoprene design - Velcro strap for a personalised, distraction-free fit - Stays in place without chafing - One size fits all