High-concerned chemical: none Craft of Weaving: Knit Model Number: M301 Pattern Type: Solid Material: Modal Brand Name: under moon Origin: Mainland China CN: Anhui Gender: Men Briefs & Boxers: BRIEFS Size Guide | Find Your Perfect Fit Follow these simple steps to choose the right size: Step 1: Prepare Your Best-Fitting Underwear Place your favorite well-fitting underwear flat on a smooth surface. Step 2: Measure the Waistband Measure the waistband width from side to side. Step 3: Match With Our Size Chart Compare your measurement with our size chart below. If you are between two sizes, we recommend choosing the larger size for a more comfortable fit. Need Help? Send us your height, weight, and usual size. Our team will provide a personalized size recommendation. Please allow a 1-2cm manual measurement difference.