Textured on one side and crystal clear on the other for maximum air removal.;Heavy duty bags are thicker and more puncture resistant than the name brands;Works with all clamp-style suction machines, like FoodSaver, Seal a Meal, VacMaster, Cabelas, etc.;Made from FDA approved, BPA free, food safe materials.;Can be microwaved, boiled, frozen, and used for sous vide cooking.