Loop bands can be used for a variety of applications and is ideal for lower body exercises. Can increase balance, strength and flexibility. Muscle groups and tendons can be stretched and strengthened. Lenght: 27,50 cm. Width: 5 cm. Thickness: 0,60 mm (medium - green); 0,80 mm (strong - red); 1 mm (extra strong - blue); 1,2 mm (extra extra strong - black).