Seamless Macrame Triangle Racerback Bikini TOP. Available in sizes Small (S), Medium (M) and Large( L). This Seamless bikini TOP is a triangle Top with Macrame Racerback detail. It is made out of 80% nylon, 20% spandex, strong and durable enough to resist damage from constant movement and natural wear and tear, due to exposure from elements such as sunlight and water. Our line of swimwear are proudly made and manufactured in the USA at the highest quality standards. To keep our swimsuits in the best looking condition, we advise to wash them by hand or use delicate setting in a washing machine.