Hermetic polyethylene bags available for food services with zip closure. Withstands temperatures up to 40º C below zero. It allows to open and close the bag easily and ensures a complete hermetic closure. Zip closing system avoids the loss of fluids, the mixture of aromas... etc. and also makes it easier the opening and closing of the bag. Its special design makes its use more comfortable, even with wet hands. It also facilitates the use of the entire volume of the bag, which facilitates horizontal and tidy storage in your freezer or refrigerator. It has a space for writing the name of the product and date, which makes it more hygienic. The package is designed to keep the bags clean, tidy and always handy