About the features of Silicon belt: When using the Silicon belt, it provides the hard support to lumbar-spine. The belt makes pelvis to form an overall support to lumbar-spin, this releases the burden from lumbar-spine and make it firm and steady. ONE TOUCH structure, the thickness is only 1mm. Easy to wear, adjust and take-off. No uncommon smell, and with vent hole. The strong silicon supports the waist! It makes the waist relax immediately! Who should use Silicon belt: a: Require to carry heavy objects by the strength of waist b: Long hours drivers c: Severe exercise on waist d: Injury on waist due to exercise Model: EUNON-K-003 (B size) EUNON-K-004(M size) Specification: EUNON-K-003 960mm (L)*140mm(W)*1mm(Thickness) Net Weight:180g EUNON-K-004 900mm (L)*140mm(W)*1mm(Thickness) Net Weight:165g Carton dimension: 220*155*30（MM） Package：24pcs/ carton Gross Weight: 13.55kgs Net Weight: 8.64kgs Capacity: 10000pcs/month