The Elevation T doesn't necessarily give you more stamina, but you feel like it the moment you put it on! Don't believe us? Guess you'll have to buy one and see for yourself... (Disclaimer: No refunds if you still have the cardiovascular system of a 72-year-old chain-smoker. We can only do so much) • 100% combed and ring-spun cotton (Heather colors contain polyester) • Fabric weight: 4.2 oz./yd.² (142 g/m²) • Pre-shrunk fabric • Side-seamed construction • Shoulder-to-shoulder taping • Blank product sourced from Nicaragua, Mexico, Honduras, or the US Disclaimer: The fabric is slightly sheer and may appear see-through, especially in lighter colors or under certain lighting conditions. This product is made especially for you as soon as you place an order, which is why it takes us a bit longer to deliver it to you. Making products on demand instead of in bulk helps reduce overproduction, so thank you for making thoughtful purchasing decisions!