Using an Exercise Ball Carrying Strap is the easiest way to carry a Fitness Ball! These convenient exercise ball carrying straps facilitate carrying & storing your fitness balls. This fitness Ball Carrying Strap is a single strap adjustable for 55cm – 65cm exercise balls. durable and compact strap, will allow you to easily carry 26″ to 30″ exercise balls. It has a built in shoulder loop for easy transport. Made by Gymnic. Sturdy, convenient & easy to use.