Made of 11oz Brown oilskin and lined with polar fleece. The zip is a heavy duty plastic YKK. It has two top (upper chest) pockets for a Diary, cellphone etc and closier with strong domes. Hand pockets are in the side seams to keep the front of the vest as clear as possible of getting caught up. The back is longer than the front to give extra protection to your back. Sizes are sx, small, medium, large, xl to 7xl.