Outer sleeves for 12" vinyl records. Loose-Fit 4mil. polyethylene plastic (above average thickness). 12-7/8" wide x 12-3/4" deep (give or take 1/8" on occasion). Good for current 2LP with gatefold no flap. For 2LP gatefolds / bulky jackets. Never sleeve polyethylene tight fitting, it usually shrinks over time. Protects from saucy fingers, dirty hands, shelf wear, impact, and abrasions. Above average thickness conceals minor jacket flaws.