The TriRig Open Back Carbon Arm Cups are a lightweight and comfortable upgrade designed to optimize support and stability in the aero position. Constructed from carbon fiber and weighing just 275 grams per set, they feature an extended 200mm length for increased arm wrap and ergonomic support. This makes them ideal for long-distance triathlon use. The integrated textured neoprene pads deliver excellent grip and cushioning, pre-installed for a hassle-free setup. Multiple mounting points and slotted bolt holes allow for a wide range of fit adjustments so every rider can find their fit. These arm cups are compatible with most aerobars, including the Alpha One. The Open Back Carbon Arm Cups make aerodynamic efficiency more comfortable and accessible than ever.