Size:S,Length:35cm,Upper perimeter 22cm,Below perimeter:14cm.Fit height 155-160cm,Fit weight 35-45kg. Size:M,Length:37cm,Upper perimeter 24cm,Below perimeter:15cm.Fit height 160-175cm,Fit weight 45-55kg. Size:L,Length:40cm,Upper perimeter 26cm,Below perimeter:16cm.Fit height 175-185cm,Fit weight 60-70kg. Size:XL,Length:43cm,Upper perimeter 28cm,Below perimeter:17cm.Fit height 185-190cm,Fit weight 75-85kg. Specifications Material:Lycra Suit for:Adult/Child/Unisex Packing List: 1 Pair X Arm Guard Sleeves or Knee Pad Applicable Scene:Fitness,Basketball,Volleyball,Cycling, Running and so on Please allow 1-2cm measuring deviation due to manual measurement Due to various monitors and lighting conditions, colors may be slightly different from listed photos Features 1.Silicone anti-slip band,fine stitching with durable quality 2.High Elastic Breathable Material 3.Flexible close,silicone antiskid,the soft silicone anti-slip bar prevents the arm from sliding down during movement. 4.Concentrated pressurization on protective areas,relieve stess 5.Four pin six wire,feelis smooth,smooth four-needle and six-wire combination,smooth feel,reduce the discomfort of human wear 6.Comfortable fabric,breathable perspiration,Adopted Lycra fabric,soft and comfortable,Dilutes sweat and moisture instantly Washing instructions 1. This product can only be washed by hand, not machine washed; 2. The anti-collision part is placed flat in the middle of the palm and rinsed. The dirty part can be washed with soap or detergent instead of scrubbing; 3. Please use neutral detergent or soap to clean the knee pads, do not soak, and do not use bleaching detergents; 4. After cleaning, air dry naturally, do not dry at high temperature or expose to the sun.