Our 4 inch by 6 inch 2 mil clear ziplock bags are made of high-quality virgin polyethylene plastic. The quality of the poly we use gives these bags high clarity so its contents are clearly visible. This 4 by 6 inch resealable ziplock bag features a high quality zipper seal on top. The reclosable zip-top is easy to pull or snap open and pinch shut, protecting its contents and making it ideal for the safe, secure packaging of food, jewelry, electronic parts, and pharmaceuticals, as well as household, healthcare, and office supplies.