Spokey Tracy S Green Training Rubber 928946 Spokey Tracy Rubber 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 different 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: S· dimensions: 32x8 cm