I always hear about the Shrouded Gloves(Leather) that do double backstab but the Shrouded Hand Wraps do double sneak attack with ALL 1handed weapons. They are cloth but maybe ideal for a sword,mace user for foregoing some armor. I lost about 50% armor wearing them since I lost all my light armor bonus.

Console ID 000CF8A9

they are found in the bookshelfs in the entrance to the DB Sanctuary

There be a lot of them as you complete DB questline.