WATERPROOF RIPSTOP - hardwearing, lightweight, woven nylon-threaded Polyester Ripstop material that resists tearing and ripping, engineered for tough protection against the cold and wet SEAM SEALED - seams are taped to protect against leaks TOGGLE ADJUSTABLE - with an elasticated bottom, your BikeParka fits around the front wheel with a toggle to adjust the size to fit snug around your bike ELASTICATED WHEEL FIT - for a snug, secure fit STUFF SAC - this bike cover is light and packable to fit into the portable stuff sac which can easily be attached to your bike frame