Specifically target your abs, back and glutes. Strengthen and tone your entire body by working your muscles in a completely new way by giving constant resistance from every direction. Great for people of all ages, and all fitness levels. Comes with a pump and an exercise guide. Size: 18" (45cm) for individuals 4'6" to 5'0". Size: 18" (45cm) for individuals 4'6" to 5'0". Pump included. Workout chart included. Warranty against manufacturer defects. Color: Blue and Red available. Size: 45cm.