Perfect To Pack Up Lunch And A Few Drinks For You And A Buddy For A Great Day Out. Meet the leakproof, tough-as-nails, carry-the-day cool bag. We call it the Hopper Flip® 18. Its wide-mouth opening makes for easy loading and access to snacks and drinks for you and a friend. Its extreme insulation means everything is staying cool and fresh all day long. Its compact, cubed body means ultimate portability - go out on the trail, onto the water, and back again.