We're devoted fans of the flip-flop. From the moment the last traces of slush melt off the city's sidewalks, we've got a pair attached to our perfectly pedicured feet. This year, Reef, one of our favorite surf-tastic brands, has impressed us with their new Reef Dram ($45) and Reef Stash ($45) flops. The Dram contains a canteen with a screw cap in each heel, perfect for storing a little beach-time thirst quencher - or drink-spiker, if you're so inclined. (The cocktail-shaker pattern on the sandal's outsole is a nice touch, too.) The Stash has more practical value: its hollow heel features a plastic pull-out drawer that's a great fit for keys or cash. Both can be purchased locally at City Sports (11 Bromfield Street, Boston, 617.423.2015).