Used wetsuit. My son wore this in late elementary school (up to 6th grade). He was at the back of the line in height and was thin. He used it for a few trips to the ocean and river each year for 2-3 years before he outgrew it. There are scuff marks on the seat and some wear on the elbows and knees, but the fabric isn't torn, so it's still wearable. Excellent for preventing sunburn and injuries. Since it's a ready-made product, some water will get in, but it provides better protection against the cold than not wearing anything. The manufacturer's size chart is as follows, but I felt it wasn't very accurate when I bought it, so it's better to check the actual measurements. Product Size Indication #14 Height 155-165cm Bust 80cm Hips 72cm Please check the size in the photos before purchasing. There are no plans to lower the price until the end of the season. Outer Material...Jersey Thickness...~3mm Gender...Kids Material...Neoprene, Nylon