Ridgecut Toughwear Shirt Size 3XL Brown Short Sleeve Vented D56, Nice lightweight. Vented back withe mesh lining in back. Material is a perforated pattern weave. It has tiny holes for ventilation. It is not mess it is part of the make of the material. It is not see through. There is a photo where I held it up to the light so you could actually see what It means to be perforated. item has been clean per site policy.