Janus 80% Merino Wool Women's Spaghetti Strap Tank Made in Norway Janus Black Wool is a collection of all-year-round woollen underwear perfect for use both indoors and outdoors, summer and winter. The elastic ribbing provides a perfect fit throughout the lifetime of each garment. The garments in this collection have been tested and approved according to the EcoTex 100 standard and are guaranteed free of substances which are hazardous to your health. Janus Black Wool is made of the finest, non-itch merino wool. Janus wool garments keep you warm and insulated on cold, windy days. Janus Black Wool garments are machine-washable and can be tumble-dried. The wool also helps regulate body temperature and keeps you comfortable in milder weather. A merino wool garment can absorb up to 30% of its own weight in moisture without feeling wet. Wearing wool next to the skin gives a feeling of well-being and care.