When you're going all out, you need a shirt with lots of ventilation. The Under Armour Training Vent 2.0 Short-Sleeve T-Shirt for Men delivers incredible ventilation with a light, fast-drying, loose design to help you power through like no other training shirt can. The ultra-breathable fabric in this Under Armour shirt adds 4-way-stretch construction to move better in every direction, while the dropped, shaped hem enhances coverage. 96% polyester/4% elastane. Machine wash. Imported.Manufacturer style #: 1361426. 96% polyester/4% elastane Ultra-breathable knit fabric Light and loose for maximum range of motion Fast-drying Moisture-wicking 4-way-stretch fabrication Dropped, shaped hem