Nike running shorts with interior lining that acts like a compression. As this is a 7 inches seam length, the inner lining may hug over your knees. It's really for running comfort and not your typical go out walk around loose shorts. Due to this compression you will feel entire shorts tighter than shorts without lining. If you like running without some compression feeling to keep your thigh vibrations during movement, get the Nike challenger shorts but it runs longer at 9 inches seam.