Thank you for viewing. These boxer briefs are designed to promote health and male function through the effects of magnetism and tourmaline. The product tag says XXL, but it feels a bit tight on me, and I usually wear LL size, so I recommend it for those who wear M to L sizes. Men's Exclusive Functional Innerwear Tourmaline & Micro Magnetic Core Equipped | New Concept Underwear to Support Cleanliness and Health Next-generation men's innerwear that pursues comfort and health for the intimate area. By incorporating the natural mineral "tourmaline" into the fibers, it emits 563 negative ions per cubic centimeter. It suppresses unpleasant odors and keeps you clean. Furthermore, it incorporates multiple micro magnetic cores. The weak magnetic energy of 104 millitesla gently works on the body, supporting daily fatigue and discomfort. With the power of magnetism, for a healthier everyday life. Features - Emits negative ions with tourmaline - Prevents odors and enhances cleanliness - Supports health with weak magnetic energy - Comfortable fit and stylish design