Salzmann High Viz 3M Scotchlite Reflective Waterproof Backpack Rucksack Bag Rain Cover for Cycling or Running [ Yellow ]
Be clearly visible to motorist day or night and in low visibility conditions - The waterproof yellow material with a reflective chevron pattern and reflective tape is highly visible from the side and the rear.  The cover fits snugly and secure over your rucksack or pannier bag and will not flap around - This is due to two retention straps and a elasticated edging on the cover.