Amazon.com | Flux Footwear Men。NEW. The Flux Adapt Runner Shoe in gray color with a gum sole is a stylish and comfortable athletic sneaker designed for both men and women. With a size 5 for men and 6.5 for women, this shoe offers a perfect fit for those looking for a versatile and trendy footwear option. The Flux Adapt brand is known for its innovative design and quality construction, making this shoe a reliable choice for anyone seeking a sleek and athletic look. Features include: Zero drop sole Wide-toe box for a natural foot movement Removable textured adaptor insole with over 100 massaging nodes. Breadable knit upper and lightweight Adapt Tread outsole for grip