From Wool & Prince: Lightest, most popular shirting fabric. Similar in weight to a classic dress shirt. 100% merino wool. 130 gsm. Personal anecdote: This is not like a typical wool shirt -- I've worn Wool & Prince in the swampy Florida heat for years; they're great and don't get too hot. This shirt hasn't had much wear -- I bought it right before starting a remote job and now have too many dress shirts. Size is Large, Slim. Measurements in the photos. No flaws or issues to note. Please let me know if you have any questions. https://woolandprince.com/products/spread-collar-dark-blue-oxford