Abstract: A bicycle seat cushion that has a relatively thick, main cushioning base with a foam material interior and a protective outer cover. The base has a narrow, pentagonal arrow shape when viewed from the top with the pointed portion at the front. The cushion includes a secondary cushioning base carrying a pair of spaced apart, relatively thin, firm, cushioning pads. The secondary base is detachably connected to the bottom of the main base. The position of the secondary base is adjustable longitudinally relative to the main base. The main base cushions the rider's buttocks while the two cushioning pads provide additional cushioning for the rider's pelvic bones.