The product is a US Military Men's Polartec Silkweight Drawers Pants in tan, designed for thermal insulation and comfort. Made of 100% polyester, these original and authentic military surplus items feature a large/long size and are perfect for collectors or outdoor enthusiasts looking for durable and high-quality base layer clothing. The design and construction of these pants are inline with military specifications, making them a practical and reliable choice for various outdoor activities.