NIKE Mens Pro Hypercool Tights polyester-blend Imported Nike Pro Hypercool technology combines targeted ventilation with sweat-wicking fabric. Mesh fabric enhances ventilation in high-heat zones. Compressive fit for a locked-in feel. Elastic waistband features a highly breathable monofilament yarn with tiny spaces in the fabric for extra ventilation. It has a Nike Pro trademark jacquard for a comfortable fit with zero distractions. Flatlock seams help reduce irritation caused by chafing.