LIGHTWEIGHT BREATHABILITY FROM START TO FINISH. Push for your fastest finish in the Nike Aeroswift Singlet BTC Edition. Its breathable design and slim fit are made for speed, helping you run your best in featherweight comfort. PRODUCT HIGHLIGHTS: Ready to Race: The Race Day Collection gears you up for your personal best with lightweight and smooth fabric. Trimmed details deliver optimal coverage without increasing bulk. It's topped off with the classic Swoosh for the ultimate racing kit. Innovative Speed: Nike AeroSwift technology integrates innovative features and materials with precision fit to deliver exceptional mobility and lightweight comfort to help you at your fastest from start to finish. Breathable Miles: Knit fabric combines with mesh for optimal cooling. Additional sweat-wicking technology helps you stay dry and comfortable. Run Free: Racerback design allows you to move freely without distraction.