Stasher is a patented, award-winning design that is eco-friendly, environmentally safe, and long-lasting. Stasher is the smart alternative to plastic. Silicone is safer, more flexible, and more sustainable than plastic. Stasher bags can take the heat, the cold, and anything else your kitchen dishes out. Thanks to the patented airtight seal, all of your food’s nutrients, flavors and juices stay locked in.