SC Johnson: A family company. - Fisk Johnson. Grip 'n Seal Technology. Microwave safe. Strong enough to use again. Fill, use, repeat. Defrost & Reheat - Vent Bag 1. Compared to other freezer seal top bags. Ziploc Bags are reusable after hand-washing and drying! We do not recommend reusing Ziploc bags after storing raw meat, fish, eggs, or potentially allergy triggering foods. Environmental Facts: Bags are recyclable when clean and dry at drop-off bins at participating retailers. Please recycle this paperboard carton.