As far as summer foot wear goes, a gladiator sandal is no longer a trend—it's a staple for warm-weather dressing. Whether you want a classic lace-up from an actual Grecian brand or those stiletto knee-highs Kendall Jenner loves to wear, there's a style calling your name. Cop a pair (or two or four!) to last you through out the summer from this selection of every type of gladiator sandal on the market.