BOA® Snowboard Boots for Men.Features include:BOA® Fit System with H4 Coiler and Sequence™ Technology, Foundation Unilite™ outsole, Response Liner I, Impact-ALG™ technology features a polyurethane airbag to provide superior cushioning and impact protection, BOA® Silver SS Laces, Flex Rating:6/10.Composition:Upper:Synthetic / Lining:Textile / Outsole:Eva.