Nike Pro Warm fabric helps you feel locked-in and warm Compressive fit for a locked-in feel Elastic waistband provides a secure fit Side seams around the quadriceps mimic the natural curve of the leg to frame and support large muscle groups Flat seams help minimise irritation due to chafing Enjoy lightweight warmth for your training session with Nike's Pro Warm Training Tights. Designed for both indoor and outdoor training, these tights feature a compressive fit for locked-in support and Nike Pro Warm fabric to help keep you warm without overheating.