These CleverDelights premium stand-up 1 pound coffee bags are perfect for a variety of uses ranging from retail sales to personal storage. 100 pack. The thick, 5mil interior lining provides a protective barrier from external elements such as moisture and UV rays. The heat-sealable design is perfect for long-term, air-tight storage (requires a heat sealer -- sold separately). Alternatively, you can also use peel-and-stick ties to keep the bags closed once opened (sold separately). Professional side-gusset design provides a nice, flat, viewable surface for your own personalized labels, business logo, or other embellishments.