Traditionally fused thermal clothing.
Slightly curved collar with inner rib that fits tightly to the neck and keeps the cold out.
Zip right through.
Ribbed cuffs.
Extra protection against the cold with an extended back.
Ultrasound welded polyester with insulating polyester wadding. Slightly curved collar with inner rib that closes tightly to the neck and keeps the cold out. Zip right through. Extended back. Rib at cuffs. Internal chest pocket.