Suitable for use with many period outfits, this authentically-tailored shirt features a collarless grommet laced neck and billowed sleeves grommet and laced from shoulder to cuff. 100% pure cotton.

I recommend that you order the same size you would normally wear. 

If you normally would wear a L in a button up men's shirt, then I would suggest you order a L. 

I also recommend for garment care is to wash in cold and hang dry