Cuddly pile slipper socks. Equipped with anti-slip protection on the sole of the foot. The slipper socks are made from 70% recycled material from PET bottles. We don't like to transport air, so we've chosen to vacuum-pack these slipper socks to reduce the carbon footprint. OEKO-TEX Standard 100 means that the materials used in the slipper socks meet multiple product safety criteria.