Bee's Wrap is sustainable food storage. Each piece is made of organic cotton that is infused with beeswax, jojoba oil and tree resin. The Bee's Wrap Explorer Pack is a partnership with National Geographic on their "Planet or Plastic" Campaign. This pack includes the custom monarch butterfly print Bees Wrap in a sandwich wrap with tie(13"x13") and 2 medium(10"x11"). This pack is perfect to wrap up a sandwich and trail mix for a hike, skiing or an afternoon in the park.