From the manufacturer: Take your collared look up a notch. Our Silk Twill Short Sleeve Camp Shirt is oh-so-smooth and has a relaxed fit for everyday appeal. Plus, our 100% silk fabric is breathable and has naturally thermoregulating properties to help you stay cool and maintain your comfortable body temperature. DETAILS SIZE & FIT CARE Made of 100% silk Weight: 30mm fabric weight for a premium drape and hand-feel Front chest pocket, straight hem, and side vent details This material is certified by OEKO-TEX Standard 100 (Certificate Number: SH015140381) which ensures that no hazardous substances are present Produced in BSCI (Business Social Compliance Initiative) certified factories, which aim to improve working conditions throughout the supply chain Made with care in Huzhou, China Small spot on chest, pictured