The Rio boxer briefs combine the colors blue, magenta, orange, yellow and anthracite in a 3D effect based on a composition of triangular shapes. This style features the horizontal opening, HO1, a patented invention of Hom. They are made from 47% natural cotton, 47% modal and 6% elastane. This fabric is produced in Europe it is dense, resistant, supple, light and very soft. This fabric preserves the vibrancy of colors well, does not wrinkle or pill, and resists successive friction. It also has antibacterial properties and helps regulate body temperature. These boxer briefs have an inner lining composed of 92% cotton and 8% elastane. The cut is designed to go down a little further on the leg than a short boxer. This cut prevents friction between the thighs and prevents the fabric from rising during movement. These boxers are certified. This certification highlights the non-toxicity of the fabric, thread, and basic dyes used in the manufacturing process.