Specifications: light gray M 【single loaded】 upper leg [30 ~ 36] weight 90-100 pounds, light gray L 【single loaded】 the upper leg [36 ~ 42] weight 100-120 kg, light gray XL 【 Single only] on the leg Wai [42 ~ 48] weight 120-150 kg, black M [single loaded] on the leg Wai [30 ~ 36] weight 90-100 pounds, black L [single loaded] 36 ~ 42] Weight 100-120 kg, black XL 【Single loaded】 Upper leg Wai 【42 ~ 48】 Weight 120-150 kg, red M 【Single loaded】 Upper leg [30 ~ 36] Weight 90-100 Kg, red L 【Single only】 Upper leg [36 ~ 42] Weight 100-120 kg, red XL 【Single loaded】 Upper leg [42 ~ 48] Weight 120-150 kg