DSG Girls' Cold Weather Compression Mock Neck Long Sleeve Shirt, Medium

Dicks Sporting Good brand cold weather layering for layering under outdoor sports jersey at cold games. It was used for cold soccer tournaments and washed in cold water. Seems like the back has pilled, but doesn’t show when under as a base layer. There does appear to be loose thread at one of the sleeves. Medium is for 10-12 and my daughter used from about 9-11. From a pet friendly, smoke free environment.