Made from tech stretch with REPREVE , the Star Insulated Pants have 60 grams insulation and a brushed tricot lining, promising to keep you warm on even the coldest days. Wide choice of color options, with an integrated removeable belt and 10K/10K waterproofing and breathability. 10K/10K Waterproof / Breathable 50% Recycled Polyester / 50% Polyester Warmth Level: Warm Critically Taped Seams Articulation Jacket Connector System Regular Waistband Basic Fly Waist Adjustment System Snow Gaitor (Pant) Bottom Reinforcement Panel Pant Hem Maximizer Belt Belt Loop Hanger Loop | O'Neill Women's Star Insulated Pants in Black Out, Size XS, Polyester