Made in the same factory as the Nagaoka branded sleeves, these are identical except that they are unbranded - which doesn't make any difference to sound quality! They have a nicely shaped bottom (which always helps) ensuring they fit snugly round the record and allowing them to slip easily into the original inner sleeve. A smooth finish ensures they won't cause surface scratching as you slide the record in, and they have superb anti-static properties. A must-have for the vinyl addict.