Patagonia Tankini Size: XS (Equivalent to Japanese M) Size can be adjusted to some extent with the back strings. New with tags Only tried on and stored. Top with a scoop neck and adjustable cross-back straps, perfect for surfing, paddling, and swimming. Made from a soft and durable fabric with 83% recycled polyester and 17% polyurethane stretch. Tankini style that covers the torso and can be paired with bikini bottoms.