Profile design F-19 Aerobar Pads F-19 pads by Profile Design fits most of the new Profile Design aerobars, and the older F-18 aerobar armrests. They are medium durometer (average softness) have velcro backing, and are stitched with vent channels. They come in a pack of two and are adjustable in both fore and aft directions, and 12∞ of rotational adjustment. 39 grams. buy either pads only ($14.95), or you can purchase the F19 armrest kit which inludes the mounting hardware and armrest ($27.95) Picture shows pad and armrest.