Our eco-friendly compostable mailing bags can remain in cartons in a cool, dry warehouse for about a year. Avoid storing these bags in sunlight or at high temperatures, or the degradation process will start sooner than you want it to. We recommend a storage temperature range of 10-40°C, which is highly achievable on most premises. Alternatively, you can use our BRCGS accredited storage facilities (Brand Reputation Compliance Global Standards) to ensure your mailing bags are stored properly.