This item is an unused gift. I'm selling it because it's been sitting at home. The outer fabric is Polartec Power Shield. It's abrasion-resistant, highly insulating, blocks 99% of wind, and boasts high breathability with the remaining 1% of ventilation. In other words, it's a durable fabric that doesn't get stuffy and keeps you warm. The lining is Polartec Power Dry. Its mesh structure excels at moisture wicking and quick drying, providing a comfortable feel against the skin. Polartec is a manufacturer that has gained attention for developing the stretchable waterproof and breathable material Neoshell. It seems that more manufacturers have started using it since around last year's models. The development of Neoshell has made it possible to outfit everything from innerwear to outerwear with Polartec, which is a significant advantage. The knees have a three-dimensional construction with durable reinforcement. This should prevent tearing even if you scrape your knees on rocks. And it's easy to move in. There are two pockets on the waist and two on the thighs. The inside is fine mesh, which also functions as a vent. There are zippers on the hems, but I'm not sure what situations they're used for. The inside of the hems has a non-slip treatment that seems to prevent them from riding up.