Timberland Winnick Waterproof Insulated Jacket For Men In Brown Size L. The Men's Winnick Waterproof Insulated Jacket is crafted from 100% nylon and features waterproof technology with fully sealed seams to help keep you dry in wet, rainy conditions, along with a windproof outer shell to help you stay warm and comfortable in adverse weather conditions. A full-zip opening, plus zip and diagonal pockets help deliver convenience on the go.