Billabong Switchback Mock Neck SweatshirtBillabong Switchback Mock Neck Sweatshirt for Women. Engineered from soft recycled sherpa for sustainable comfort, this sweatshirt features a mock neck lined with recycled ripstop fabric for enhanced durability and structure. The relaxed fit accommodates layering effortlessly, measuring 26" from the high point of shoulder on size M. A convenient snap closure at the neck allows easy adjustment, while top entry design simplifies dressing. Multiple