Pro stradius saddlebag medithe stradius saddlebag from pro is a high quality saddlebag that is perfect for any cycling enthusiast this medium bag hooks easily onto a seat post and saddle rails and is made from water resistant and tough materials that will keep your gear safe while you make tracks down the road or trail featuressize 0 6 lmedium sized saddlebag with moulded casingwater resistant materials and zippermade pvc free materialsoptimized strap positionswater resistant material eva fra