This is a Quiksilver children's wetsuit. It's a size S. It has knee pads and is perfect for surfing. The fabric thickness is 3mm. It's stretchy, so it should fit children from kindergarten to lower elementary school age, but please refer to the measurements. How about a stylish item for the sea at a great price? Shoulder to hem: Approx. 90cm Waist: Approx. 24cm Width (measured along the shape from the collar to the cuff): Approx. 46cm - Brand: Quiksilver - Color: Black - Features: Knee pads - Style: Full suit Thank you for looking. Thickness: ~3mm