The outer material is made of 70 denier nylon, 160 denier nylon, and is a 2.5-layer durable water-repellent fabric with a porous wet polyurethane coating.
The large ventilation to prevent stuffiness is tilted toward the front of the body for easy access to the pockets of the clothing worn underneath.
The large chest pocket is a distinctive feature.
Partially reflective stitching is used to increase visibility at night.
