Leather! Durable! Runs a bit large for a 7-my size. Great for a 7.5! But don’t take my word…here’s the official doc line “The first Dr. Martens Chelsea boot was produced in the 70s, but the actual style dates back to the Victorian era. Today, the 2976 Chelsea boot is a slick, uncompromisingly fashion-forward look for all genders. With a sure fit and an easy-on, easy-off elasticized gusset, it's a versatile boot that works with everything. The Chelsea is forged using one of the finest methods of construction: utilizing a Goodyear welt and heat-sealing it to the sole.This season, the boot gets an empowering boost from an aggressive, 1 1/2 inch platform sole.”