Best Designer Sustainable Swimwear: Nanushka Made from 100 percent organic cotton — restricting the use of synthetic chemicals and genetically modified seeds, improving soil fertility, and better livestock management — Nanushka's simple yet small change can make an impact on the level of sustainability of its garments. The Animal-Stripe Bandeau Bikini Top (£173) and Abstract Stripe Bikini Bottoms (£143) are sure to be cherished for a lifetime. And, with an aim to be 100 percent sustainable, with full transparency and traceability across each component of the supply chain by 2025, Nanushka must be putting in some serious groundwork. Image Source: farfetch.com Animal-Stripe Bandeau Bikini Top £173 from farfetch.com Buy Now Abstract Stripe Bikini Bottoms £143 from farfetch.com Buy Now