Zig Cliffhanger Men's Boots. Love ZigTech so much that you have to have it for the winter? Well, here it is for the first time, a Reebok Zig boot that features the same great "energy drink for your feet." The Reebok Zig Technology features engineered lightweight foam as the outsole, allowing it to absorb the impact of heel strikes, while spreading it along the zigs and zags. Prepare for the cold weather with a high top boot that's made with a comfortably padded ankle, durable leather upper and classic Reebok label on the tongue.