Aqua blue Anna open-back one-piece from SIAN SWIMWEAR featuring one-shoulder, open back and stretch-design. Be mindful to try on swimwear over your own garments.. POSITIVELY CONSCIOUS: We've partnered with Good On You — an ethical agency that rates how sustainably brands perform across various people, planet and animal welfare criteria. This product comes from a Conscious brand that performs well in relation to their impact on the planet, for example ensures the use of materials that limit the amount of chemicals, water and wastewater involved in production processes..