This is a sheer shirt made of cotton lawn with a palm tree watermark pattern and pleat processing. When you wear something dark underneath, the watermark areas become darker, making the pattern slightly clearer. Due to the pleat processing, it doesn't cling to the skin, so it should be cool. The collar has soft wire along the edge, allowing you to shape it. You can enjoy variations such as standing the collar up or folding just the tips of the collar like a morning shirt. For sun protection, it meets the essential requirements: the collar can be stood up to cover the neck, and the sleeves are long enough to cover the back of the hands. I think it would also look cool worn over swimwear. I purchased this for sun protection during summer leisure activities. I used it about twice in one season, and after cleaning, it has been stored. The size is 40, but due to the pleating, it appears shrunken and slim-fitting. It has stretch, giving it a more free-size feel. Color: Off-white Size: 40 Bust: 44-45cm when laid flat and contracted Length: 55cm Sleeve length: 60cm Upon inspection, there are no scratches or stains. This is a used item that has been stored for a long time, so we ask for your understanding. Material: 60% Cotton, 40% Polyester Sleeve length: Long sleeve Material: Cotton