The Thorogood Infinity FD Series 11 Inch Studhorse Waterproof Safety Toe Pull-On Wellington Boots are a tough, waterproof work boot that will keep your feet comfortable, just about forever. These 11-inch pull-on Wellington boots keep your feet protected, wherever the site and whatever the job. The Infinity FD series combines some of the newest technology with traditional Thorogood reliability, giving you amazing performance that doesn’t compromise on comfort. This Wellington work boot includes patent-pending FLEX-DRIVE rear-welt construction, which gives you better flexibility with superior durability. Our proprietary anti-fatigue high rebound sole absorbs shock and returns energy with each step, keeping you moving forward so that your workday doesn’t feel like it lasts forever.