This bag is made of food grade silicone with a seal closure. It is safe and can storage food well and keep them fresh. Can be heated or refrigerated, always widely used in microwave, refrigerator, toaster, freezer and dishwasher, etc. Bags are reusable since they are very strong and durable,non-toxic and harmless,meets the FDA requirments. Your logo can be printed on the bags. 7.8"" * 7""- 33oz"
