These are definitely silky....I wouldn't say they are mesh though. Found some info online:
Soccer Stricon Adidas Shorts black
Flex your goal scoring muscle The Stricon Soccer Shorts by adidas Embroidered brand logo elastic waist with an inner drawstring. 100 polyester. The adidas Stricon short is ClimaCool and lightweight for comfort and flexibility. It's crafted using the moisture-wicking ClimaCool® performance fabric that draws sweat away from your skin to keep you cool and dry.
Hope that helps. Thanks for looking at my auction!