For the fun-loving toddlers, our stylists have also picked some of the most comfortable printed rain boots. The brand sells its products in over 150 countries and operates over 135 stores globally. Apart from footwear, Merrell has expanded its product line to clothing as well. Navy Blue is a darker shade of blue, loved by both men and women. Apart from colors and styles, choosing the material is crucial before you shop your favorite Merrell Navy Blue Boots for boys. Available material options are: Leather and Synthetic.