Brand New with tags Allbirds Trino Hiders no show sock. See the size guide photo for fitment. Color: Malibu Made with both eucalyptus tree fiber and ZQ Merino wool. Made in the USA. Hiders are made of 48% TENCEL™ Lyocell, 21% Merino Wool, 15% recycled nylon, 7% recycled polyester, 7% polyester and 2% Spandex.