A Thick Turtleneck: Vince Donegal Wool & Alpaca Blend Turtleneck Sweater If you want something super thick and cosy, this Vince Donegal Wool & Alpaca Blend Turtleneck Sweater ($365) is the one for you. Having a grey sweater in your closet will always be useful. Image Source: nordstrom.com Vince Donegal Wool & Alpaca Blend Turtleneck Sweater $365 from nordstrom.com Buy Now