The fwe top rack pack is a great rack bag for your bike it is constructed from 600d polyester polyester and nylon giving it water resistant properties to keep your stuff protected during your commute or out for a days touring it comes with plastic fixings and the scotchlite reflectivity strips will help keep you visible out on the roads in addition to the main pocket the fwe top rack pack boasts two expandable side pockets so you have plenty of space for your gear the rack pack also com