What is an "oilskin"?

An oilskin is a type of waterproof and windproof garment that is commonly used for outdoor activities such as sailing, fishing, and hiking. It is made from tightly woven cotton fabric that is treated with oil or wax to create a durable and water-resistant finish. The oil or wax coating helps to repel water and keep the wearer dry in wet conditions, while also providing protection from wind and cold weather. Oilskin garments are typically designed with a relaxed fit and feature a range of functional details such as adjustable cuffs, reinforced seams, and deep pockets for storing outdoor gear. They are popular among outdoor enthusiasts for their durability, versatility, and classic style.