Vacuum sealing keeps food fresh for up to 5 times longer than ordinary methods. Airtight seal helps prevent freezer burn and reduce waste. Save money by buying in bulk. Multi-channel design for fast, effective air removal. Embossed seven-layer bags are strong and puncture resistant. BPA and PFAS free. Unique, durable multi-layer construction creates an airtight barrier around food. Specially designed channels for fast, effective air removal. Compatible with most brands of vacuum sealers. For best performance, use with Presto FreshDaddy vacuum sealers. Pack contains two (2) 11-inch by 20-foot rolls of bag material. Smaller 8-inch x 20-foot rolls are also available.