TukTek 3D Gel Foam Bicycle Seat Cover Pad for Soft Comfortable Bike Ride Make your bike ride more comfortable with this new 3D raised foam bicycle seat cover. Great soft seat for your healthy cycling workout outside or in your home gym. Fits over the top of most standard bicycle seats and has draw string to pull tight around the bottom. Breathable and fast drying. Inside seat pad has raised bumps to prevent gel seat cover from slipping off saddle. Inside dimensions are 10.5 x 6.5 (Can fit spin cycle bikes and mountain bikes). Made of lycra nylon and gel.