I was not impressed by this shirt when I received it. It looked more 3rd world kid than American kid. BUT we gave it a chance, and this is what I can tell you about it- Size small is a size 7/8.**It is a Adidas Climalite shirt, and does a fair job wicking away sweat. Although I prefer Under Armor - variety is nice.**The green is a St. Patrick's Day green, and looks good with our sons blonde hair, and blue eyes.**I personally like it better with jeans, and sneakers on a school day, and shorts on practice days.***100% polyester, and like all wick away shirts it is machine wash warm, no bleach, or fabric softener, line dryI just wash all his wick away stuff together so I don't have to pick through a load, or put them in a delicate garments bag that gets thrown in with tshirts. Makes pulling them out before the dryer easy.**Although we have come to really like it I have as of yet to find out how well spills, and stains come out of it. So far it has come clean with every day use on, and off the field (baseball, and football)***Not as "slinky" as Under Armor but nice "movement" without the high shine of some of the Under Armor , so makes for a very nice option in his wardrobe.We do recommend. We will buy another in this material different style this year, and add a couple again next year.