Thank you for viewing. These low-rise boxer briefs are designed to promote health and male function through the effects of magnetism and tourmaline. The product tag says 2XL, but they feel tight on me, and I usually wear an LL size, so I recommend them for those who wear a size M. Men's Exclusive Functional Underwear Tourmaline & Micro Magnetic Core Equipped | New Concept Underwear to Support Cleanliness and Health Next-generation men's underwear that pursues comfort and health for the intimate area. Natural mineral "tourmaline" is blended into the fibers, releasing 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 milliteslas gently works on the body, supporting daily fatigue and discomfort. With the power of magnetism, for a healthier everyday life. Features - Releases negative ions with tourmaline - Prevents odors and enhances cleanliness - Supports health with weak magnetic energy - Comfortable fit and stylish design Color...Black系 (Black-based)