These Poly Plain Snappy Bags (Also known as heat seal/ sandwich bags) are made from a recyclable polypropylene plastic. They are a very popular item in catering and are commonly used in restaurants, bakeries, cafes, delis to package food such as sandwiches, baguettes, pastries, biscuits etc. These bags arrive on a small hook for ease of access and can be simply snapped off. Can also be heat sealed to maintain freshness of the product inside; available in many sizes.