Packs are available in the following colours; Black (reflects white), Red, Green, Blue, White, Orange and Yellow.
If you live in the United Kingdom (or any other country for that matter) and intend to visit France on motorised two or three wheels, you must by law enter France with compliant reflective stickers on your helmet.
All helmets must have four reflective stickers: one on the front, one at the rear and one on each side. The surface of each sticker must be 18 cm2 and, within each sticker, you must be able to draw a 40 mm diameter circle, OR a 12.50 cm2 rectangle with a minimum of 20 mm length
...these stickers comply with these requirements :)