These sleeves are made from high density polypropylene, which is about as clear and see-through as it gets. Other sleeves (they call them "industry standard") are made from polyethylene, which is more opaque and cloudy.

You'll have to try really hard to get some wrinkles in these. 3 mil thick, these sleeves are thicker than most and won't tear easily. (3 mil is not 3 millimeters. One mil stands for one thousandth of an inch. Which doesn't sound thick, but it's plenty thick.)

Maximum transparency: Big Fudge offers the best way to exhibit your precious vinyl record collection with these crystal clear outer sleeves. Made from high-density polypropylene, our sleeves are transparent and don't cloud easily unlike industry standard sleeves that are made from polyethylene.

Safeguard your vinyl: These cover sleeves are 3 mil thick, more than enough to keep your precious vinyl from dust, scratches, or any kind of blemish that might ruin their condition.

Superior material for best vinyl protection: Polypropylene is known for its high flexural strength, moisture and chemical resistance, and high-impact durability. These protective vinyl covers are made from a quality material that most certainly delivers.