The Proviz Switch rucksack cover is adjustable and designed to fit over all standard size rucksacks (up to 35L capacity).
The Proviz Switch rucksack cover is made from a dual-layer waterproof outer shell that can be used either way to give the user two options, one for the day and one for night.
By day, the lightweight fluorescent yellow waterproof material helps to keep you clearly seen on the roads. At night you Switch it around so the reflective material lights up when vehicle headlights are shined upon it enabling the user to be seen more clearly on the roads, therefore allowing drivers to adapt accordingly to your position on the road.
The rucksack cover is 100% waterproof and is attached using two elastic straps across the back of almost any rucksack.