Thank you for viewing! These are green nylon shorts, lightweight and breathable. They can be used as swimwear. I bought these for my son, but he outgrew them without ever wearing them. I took them out of the bag to take pictures this time, but they are new and unused. I purchased them two years ago. The size is 170, but they feel a little small. - Size: 170 - Color: Green - Material: 100% Nylon / 100% Polyester Please refrain from purchasing if you are concerned about home storage.