Gym ball , or exercise ball , fitness ball , swiss ball Anti-burst quality; Ideal for fitness and stability. Gym ball , or exercise ball , fitness ball , swiss ballMade of PVC or ... stability training;Size: 45,55,65,75,85,95,120cm;Custom logo available;Any custom pantone color available;Can be ... with instruction sheet and DVD etc. Burst Resistance Gym Ball , Exercise Ball , Fitness Ball , Swiss Ball