Profile Design F35 Pads (Pair) Compatible with F-35a Aluminum, F-35c Carbon, F-35i Injected, and F-35 Adjustable Armrests F-35 Standard replacement pads are 16mm thick, built with moderate thickness to provide comfort in both training and race conditions Made of EVA foam with anti-bacterial/anti-microbrial Lycra cover Set of two Pads and Armrests parts designed to customize the fit, angle of armrests, and comfort of Profile Design Aerobars.