CleverDelights 1 pound glossy black stand-up coffee bags are perfect for a variety of uses ranging from retail sales to personal storage. 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 on Amazon). Professional side-gusset design provides a nice, flat, viewable surface for your own personalized labels, business logo, or other embellishments.