This is a men's M size Aqua-Titanium inner mock neck long-sleeved compression shirt from Phiten. Phiten's water-soluble metal technology disperses titanium into water at the nano level, creating "Aqua-Titanium." With this Phiten technology, titanium can be infused into each individual fiber. Wearing products made with this technology supports the body and mind in returning to their natural relaxed state. This can also be expected to loosen muscles. (Aqua-Titanium is a brand of water-soluble metal technology developed by Phiten.) Aqua-Titanium is impregnated into some parts of this product. This product is unused and unworn. It is currently in a plastic bag and has been unopened since it was obtained. Images 1-3 are reference images taken from the internet. The actual item to be sent is also shown, but detailed photos of the item will be omitted due to its unopened state. Please understand this beforehand. Shipping is planned via "Yu-Packet" or "Nekopos." Due to size and thickness restrictions, we will not use heavy-duty packaging. It will be lightly packaged, such as in a plastic bag. Also, it may be folded differently from the original folds when packaged, so some creases are inevitable. Please understand this beforehand. ~The following is product information~ □ "Phiten" Domestic genuine product. □ Part Number: SM-25A6402 Domestic genuine product. (※Licensed production by the Japan Knitwear Industrial Association.) □ Color: Black (※The color of the photos may differ slightly depending on the monitor.) □ Material: 95% Polyester, 5% Polyurethane □ Condition: Brand new (with tags) □ Size: Men's M Manufacturer's size: Chest 88-96cm Height 165-175cm, Waist 76-84cm (Please allow for some margin of error) □ Country of Manufacture: China