Tropical days ahead in the Tommy Bahama Isola Vita Reversible String Bottom in Palace Blue. The Isola Vita Reversible String Bottom by Tommy Bahama is made of 85% Recycled Nylon and 15% Spandex. The Isola Vita Reversible String Bottom has a 3/8" side seam and features a reversible design and square TB logo cord ends. For best results, handwash your Tommy Bahama swimwear.