BLACKROLL® TRAINER BAG is perfect for transporting up to ten BLACKROLL® STANDARD / MED / PRO / GROOVE / GROOVE PRO or FLOW foam rollers in the 30 cm length. The bag is therefore ideal for visits to a studio, transporting course materials, or for outdoor activities. The length of the carry strap was designed to allow the bag to be either worn comfortably on the back as a backpack or carried as a shoulder bag. The TRAINER'S BAG is perfect for physical therapists, team trainers, and any athlete.