A family company. Power shield technology unbeatable protection. Stronger (Bag film tested using ASTM ID1789 dart drop and ASTM ID 2582) than Hefty on punctures & tears. Stand & fill. Microwave safe. Strong enough to use again. Fill, use, repeat. Stand & fill bottom for easy organization. A family company since 1886. - Fisk Johnson. 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.