2. Fitness mat: the material should be high-density and hard, so as to keep the foot feeling and ensure that it will not be twisted when doing big moves. At present, there are high-density PVC (generally used in home gyms) and rubber splicing mats (generally used in commercial gyms); Large size, because its movements are much larger than yoga mats, so the size is greater than 190cmx80cm, and the largest is 300cmx 180cm.