This brief features Lycra Xtra Life fabric that lasts 5-10 times longer than ordinary spandex. They utilize 9 Thread Flatlock Technology to mold to your body's shape during vigorous exercises. The UV Block the Burn technology provides 50+ UPF protection against harmful UV rays. The price drops from $39.50 to $12.53. Shipping is free for prime members or on orders over $35.