Spokey Tracy L blue training gum 928948 Spokey Tracy rub will prove valid during home training, fitness, pilates, crossfit. Chosen both by beginners, as and advanced. Recommended by a personal trainer, because it helps involve various muscle parts. Works on a similar principle as a expander or a yoga belt that enables performing exercises consisting in stretching and moving sideways. Made of durable material Technical data:· size: L· dimensions: 42x8 cm