What Our Gearhead® Experts Are Saying: "I’ve been using the Folo Merino Brief for trail runs, long travel days, and everything in between. The Merino Air-Con fabric is impressively soft against the skin and keeps me feeling dry even when I’m working hard. It’s lightweight enough that I forget I’m wearing it, and it doesn’t ride up. Perfect for year-round use when you need performance without sacrificing comfort." We start every adventure by pulling on the Mons Royale Folo Merino Brief, knowing we’ll stay comfortable no matter how far we roam. Mons Royale crafted these briefs with Merino Air-Con fabric, blending ultralight merino with nylon and elastane to create a soft, breathable layer that keeps us dry and fresh from dawn to dusk. The slim fit sits smoothly under baselayers or activewear, delivering natural odor resistance and moisture management that shines on trail runs, hikes, and multi-day trips. From early-morning starts to well-earned campfire evenings, the Folo Merino Brief is the first piece we put on and the last one we take off.