"So timeless in a triangle silhouette, this femme bikini top features an eyelet gauze fabrication and sliding adjustable coverage with ties at the neck and back. Fit: Triangle-style, adjustable fit Features: Soft cotton fabrication, eyelet gauze, sliding cups, self-tying closures at the neck and back, double-lined Responsible Fibers This item was produced using at least 50% of a certified material sourced with social or environmental impacts in mind, such as recycled, organic, cellulose fibers and materials that have been responsibly sourced." This suit is 100% Cotton, which makes it less stretchy and therefore fits true to size Large. From designer called "Mare Perpetua Sol"