The Sport Roller High Visibility is a durable, waterproof pannier that can be fitted to either a front or rear bike rack. The High Visibility model features a reflective yarn that is interwoven throughout the exterior of the pannier, creating a highly reflective surface that is easily seen by other road users, perfect if youÃÂ¢ÃÂÃÂre riding at night or in low light conditions. See the photo for a comparison between this version compared to a normal pannier. Innovative mounting designs allow for easy fitment and removal. Each pannier has a volume of 12.5L, and they are sold as a pair.