Never Use Plastic Bags Again! Sustainability + Convenience with Zero Sacrifice! Lunchskins compostable freezer-safe gallon bags are made from polybutylene adipate terephthalate (PBAT), a certified compostable polymer that naturally breaks down under composting conditions, along with plant-based materials like polylactic acid (PLA) and cornstarch. This composition helps reduce reliance on fossil fuel-based plastics while ensuring responsible disposal.  Designed for versatile storage, these bags are perfect for sandwiches, soups, smoothies, travel items, snacks, leftovers, and much more. They quickly and securely lock in freshness, while their durable, leak-resistant construction ensures reliable performance and supports eco-friendly disposal.