Insulating AT Optic fleece Kangaroo pocket Full-zip front A must for the outdoors man, this Stainton fleece by Berghaus has been crafted from the brand's AT Optic fabric, which offers superb insulation and durability. This long-sleeved top features a full-zip front to allow for adjustment in accordance with the temperature. This warming piece sports a kangaroo pocket and a stand-up collar.