Never Use Plastic Bags Again! Sustainability + Convenience with Zero Sacrifice! Lunchskins compostable freezer-safe gallon storage bags are made from non-toxic, plant-based materials. Because, these bags are made from plants they are not completely transparent. Plant-based materials replace a portion of fossil fuel plastic with safe + compostable materials sourced from renewable resources. These plant-based bags are designed to handle all your storage needs. Perfect for sandwiches, soups, smoothies, travel items, snacks, leftovers, and much more. Our Freezer-Safe Ziptop Bags quickly and easily lock-in freshness. Durable and strong to prevent leaks so you can toss with ease. Depending on your use, they may also be reusable.