Thank you for viewing. The item is as follows: Under Armour men's UA Rush Energy Sleeveless T-shirt. Color: Navy Size: L Model Number: 1366139 Fit: Loose Material: 90% Polyester, 10% Polyurethane Washing Instructions: Machine washable You can search for "UA Rush Energy Sleeveless T-shirt" to see the size, details, and specifications on the official Under Armour website. However, this product is one model older than the one that appears in the search results, and it has a hexagonal design on the shoulders. I have only used it a few times, and in my opinion, it is almost new. However, as shown in the last photo, the model number tag is coming off. I use the same shirt in other colors, and because it contains 10% polyurethane, it is stretchy. Even if the shirt sticks to you with sweat, you don't feel pulled, so I think it's good for sports where you sweat a lot, such as running or hot yoga (personal opinion). I will send it via Nekopos (a Japanese delivery service). Instant purchase without comments is also welcome. I am a non-smoker and do not have any pets. Please be sure to read my profile. Thank you.