The Obermeyer Boy's Keystone Pants provide you with the right level of weatherproof performance for hitting the slopes. They have 60 grams of warm insulation, an elastic waistband for that perfect fit and reinforced hems that add much needed durability. These pants were constructed with HydroBlock Sport 10,000 mm waterproof / 10,000 gsm breathable 100% polyester fabric with an Ottoman Weave that will hold up through all the fun you'll have on the mountain while providing the best performance. The Obermeyer Boy's Keystone Pants will keep your young man comfortable and happy all day long.