I'm a novice, but I don't see anything of concern. I plan to fold it and put it directly into a Yu-Packet Post Mini envelope. From the website: Specifications - The surface is finely textured and beautiful cotton, and the skin side is smooth and comfortable "Airism." - Dry and contact cooling functions. - The moderate firmness allows for a neat silhouette. - The simple ribbed collar creates a clean casual impression. - Slits on both sides of the hem allow it to be worn tucked in or out. - With a chest pocket. - Basic design and silhouette that are easy to use in various stylings. Specifications - Sheerness: None (Slightly sheer for 00 WHITE only) - Top fit: Regular - Pockets: Yes Product number: 455386 Material Body: 73% cotton, 27% polyester / Ribbing: 82% cotton, 15% polyester, 3% polyurethane Care Machine washable, do not dry clean, do not tumble dry Please be aware that color may transfer to other items if wet from sweat or rain, or due to friction. Color: Blue系 (Blue-based) Stains, tears, odors, etc.: None