1. Material: Sponge/EVA
2. The interval size can be tailored according to the specific situation
3. Features: increased comfort, rebound and shock absorber, sweat-absorbing and breathable, soft and light, massage slowly, no pain when standing for a long time
4. Size 35-36 is 23.5 cm long, size 37-38 is 24.5 cm long, size 39-40 is 25.5 cm long, and size 40-41 is 26.5 cm
5. Height: 1.5 cm, 2.5 cm, 3.5 cm
6. Weight: about 55g
