The Shafer Canyon pant's adjustable waist enables you to reach a perfect fit with many base and mid layer combinations. Columbia has also utilized its proprietary liner material with heat reflecting technology - the liner reflects a part of your body warmth straight back at you! The insulation layer is quite light, making this model a great choice for a bit of frost. - Spacious model, big sizes - Waterproof, windproof, breathable Omni-Tech material with criticals seams sealed - Omni-Heat liner reflects body warmth back - Stretchy main fabric - Zippered hand pockets - Snow gaiters - Snap adjustment at hem