Are you sure? I have an ISC player issue long sleeve jumper and it certainly isn't tight around the wrists, just look at the pictures of the Geelong players this weekend, they certainly don't have that issue. Either port specifically asked for skintight sleeves or they are taped down somehow I would say.Just an assumption, but that looks like the design. I'd say it's to prevent a tackler restricting a handball by holding the lower part of the sleeve.