Men vest size chart:order a size up would be recommend S: bust 82-88cm, length 54cm, suitable for height 163-168cm, suitable for weight 50-58kg M: bust 86-92cm, length 56cm, suitable for height 168-173cm, suitable for weight 56-65kg L: bust 90-98cm, length 58cm, suitable for height 173-178cm, suitable for weight 64-71kg XL: bust 94-102cm, length 60cm, suitable for height 178-183cm, suitable for weight 70-78kg XXL: bust 98-108cm, length 62cm, suitable for height 183-188cm, suitable for weight 77-86kg Women vest size chart:order a size up would be recommend S: bust 74-80cm, length 55cm, suitable for height 155-160cm, suitable for weight 40-45kg M: bust 78-84cm, length 57cm, suitable for height 166-165cm, suitable for weight 45-52.5kg L: bust 82-88cm, length 59cm, suitable for height 165-170cm, suitable for weight 52.5-60kg XL: bust 86-92cm, length 61cm, suitable for height 170-175cm, suitable for weight 60-67.5kg XXL: bust 90-98cm, length 63cm, suitable for height 175-180cm, suitable for weight 67.5-75kg Front zipper closure 2Mm Warmth: Three layers of fabric can prevent the body temperature from losing too fast, keep warm at all times, and prolong the playing time in the water. increase warmth and decrease weight Wide Application: this wetsuit skins is wonderful for beach, snorkeling, swimming, scuba diving, surfing, sailing, kayaking, canoeing, perfect gift idea for mother, father, family, friends, lover...etc.