Safety should come first. But that doesn't mean you have to sacrifice comfort or performance. HeatGear is best for weather between 75-100 degrees. Gameday Armour pads are lightweight and ultra-durable, giving you the right protection, where you need it. Mesh underarm and back panels deliver strategic ventilation. 4-Way stretch fabrication allows greater mobility in any direction. 90% polyester/10% spandex. Imported.