Boots Season Year-Round? The Combat Lug Boot Is Here For It. With Trending Combat Styling, These Kids Boots Feature An Inner Zipper For Easy On-And-Off. Shop Them In A Range Of Neutrals And Fin Designs To Go With All Their Outfits.Main: 100% Polyurethane Lining: 100% Polyester Outsole: 100% Thermoplastic Rubber.