The CAT Wellston is a pull-on Wellington boot that allows easy access and comfort. This Caterpillar boot is composed of full-grain leather and made with Goodyear welt construction to make for a durable boot to withstand the task at-hand. The pull-on loops allow for you to get this boot on with ease and the nylon mesh and PU foam sockliner provide you with all day comfort. Material: Leather.