This bra, made of Merino wool, is great for activities with little to no shock, such as hiking, cross country skiing, cycling and Nordic skating. - Double fabric - 93% wool (Merino), 7% Elastane - Flat lock seams for reduced risk of chafing - Racerback style - The elastic band is covered in soft Merino wool - Naturally odour resistant, great function even when damp Devold undergarments are treated with a natural compound made to protect the apparel from wool-eating insects. It has a gentle, citronella-style scent and is completely harmless to people. The treatment protects the garment for one year and its scent diminishes and fades away with airing the garment.