Mini Closed Back Arm CupsMini Closed Back Arm Cups: Maximum Comfort for Your Aero Position The Mini Closed Back Arm Cups provide comfort and support for your triathlon or TT bike. These arm cups take the proven design of our Mini Open Back Scoops and enhance it with our patented closed back design, offering the most substantial arm wrap and surface area of any arm cup on the market. With a length of 127mm, these cups ensure a stable, comfortable fit, keeping you in the aero