Klein Highlights:
My only qualm is his height. He doesn't appear 6'1" to me unless he's grown since. You never know with a lot of these listed heights. Players and coaches embellish because they realize it's to the advantage of the recruit until it can be disproven.
My guess is he's on the short side of 6 feet.
Nevertheless, a lot to be impressed with here. He plays really low to the ground, allowing him to shed blocks better than a player his size typically would. Klein also exhibits a good burst of speed. The closes on the interceptions were excellent. His back peddle, turn and run ability, and ball skills were superior to most Wisconsinite LB's (since we run the football so much here). He recovered well when he got caught out of position (anticipation is OK, but could probably improve) against the run and finished with nastiness.
If the Badgers get him into camp, and he actually is around 6'1", odds are he'd get offered and commit subsequently.