The Helly Hansen Boys & Girls Vertical Bib Pants has a warm Polartec upper that provides optimum warmth. Designed for outdoor activities this bib pant has an adjustable leg length. The reinforcement fabric on seat knees and bottom legs make it a comfortable wear. This bib pant has a half-zipper front and offers you an extra layer of insulation., Helly Tech Performance., Primaloft Black Eco Insulation 80g/m2., Polartec 100g/m2 in bib part., Adjustable leg length for customized fit., Reinforcement fabric on seat knees and bottom legs.