MBT Men's Rafiki GTX Laceup Boot 100% Leather Rubber sole MBT, where function meets lifestyle Innovator of wellness footwear that employs superior materials, craftsmanship and construction MBTs are designed to enhance and strengthen the natural physiological framework of the body Dual board last construction Waterproof Masai Sensor, upper and laces MBT Dry&Cool sockliner with antimicrobial treatment