Free People Sigma Turtleneck in Green. - size S (also in L, M, XS) Free People Sigma Turtleneck in Green. - size S (also in L, M, XS) 94% lambs wool 5% nylon 1% elastane. Made in Cambodia. Dry clean. Turtleneck design. Drop shoulders. Knit wool fabric. FREE-WK1344. OB2360944. Free People invokes a spirit of femininity and creativity. Throughout their line of sweaters, tees, dresses and more, each piece incorporates a high level of quality and originality that reflects their adventurous it girl. With all that's constricting in the world today, Free People says your clothes don't have to be. Be yourself, be creative, be free.