Smartwool Womens Saturnsphere 3-Pack Merino^Nylon^Wool Made in USA or Imported Enjoy a splash of color with the comfortable Saturnsphere by Smartwool&reg;. Wow technology offers a reinforced sole for excellent comfort and durability. Supportive arch brace. Materials: 76% Merino wool, 21% nylon, 3% elastane. Machine wash warm and tumble dry low. Sold in a 3-pair pack.