Shop Unisex's at RalphLauren.com, the Official Site of Ralph Lauren. Houndstooth Turtleneck Sweater - This classic turtleneck sweater is crafted from a warm wool blend and features three-quarter-length sleeves and a stylish houndstooth pattern. Turtleneck. Three-quarter-length sleeves with ribbed cuffs. Ribbed hem. 57% wool. 18% viscose. 12% nylon. 9% cotton. 2% angora. 2% cashmere. Hand wash. Imported.