VERY think material. Not see through but you can see every... curve. Just put it like that. I had to take them from my husband because... he's NOT going out in public showing off to the world.Keep that in mind when buying.These are lightweight and super comfortable. Perfect for summer weather. ?Me quedo perfecto a la talla muy buena calidadNice comfortable fit.These pants in Medium long (tall) are actually long enough—with some extra room for more growth—for my 15 year old, 6’4” son. He has a 30” waist, and I probably could have gone with a Small long (tall), but medium fits him well enough that they aren’t falling down or anything. (Wow, this review is very specific, and vague at the same time. Sorry!). They have a looser fit, with a cuffed ankle, not fitted and super narrow at the ankle like the Tiro pants. The cuff is stretchy and easy for my son to pull over his size 13 feet, and the fabric has a good amount of stretch overall. The material is thick enough where it feels of great quality, but it is also breathable. The Adidas pants that are offered in small and medium tall are often no longer in stock or sold out, so when I see them, I grab them! When I purchased them, they were only thirty dollars pair, which is a great deal. I usually have to buy him SCR brand athletic pants in size Small, with the 36” or 38” length (which are also great quality and very nice), but those are almost fifty dollars a pair and don’t have the Adidas branding. I bought the lighter gray and charcoal gray.Fits my slim figured hubby very well.I bought these men's pants, even though I'm a woman, because they are available in tall. The fabric is lighter weight than I expected, but it's very soft, so I forgave them. They were a little baggy in the waist and hip area, so when I ordered a second pair, I went one size down. Should have stayed with the original size, because the smaller size wasn't as comfortable. Still love them, though.El pantalón es bonito pero el tallaje es un poco más pequeño que otros Adidas que tengo, los bolsillos no son seguros es mejor no guardar cosas de valor en ellos.Fue un regalo y quedó Perfecto!