This is a set of two Uniqlo half pants. They are the same style, one in black and the other in a reddish-brown color. The fabric is a light, slightly rustling material, 100% nylon. I think it's a material that can be used both on land and in water. They dry quickly after washing. Both have been worn about twice and are in good condition, but please refrain from purchasing if you are very particular. I am also selling many other children's clothes. I offer a discount for combined purchases, so please let me know before you buy. Thank you.