3.Different design for different body part, such as knee-joint, articulation cubiti and shoulder joint 4.The spring and far infrared fabric material can be extend freely to meet different size. 5.3 levels Heating function 45, 50, 60 degree. 6.Price including assembly 2pcs SHUNGITE PLATE , but shungite plate materials need supply by customer 7.Time controll: 30 mins