First on, last off the Essential Boxer Briefs from Patagonia are fast wicking, highly breathable and soft on the skin. They provide all-day comfort with a fabric blend of Tencel™ lyocell and elastane stretch jersey that feels soft and natural yet has all the technical benefits to wick moisture and stretch. With a comfortable anti-roll waistband, flatlock seams and a stay-put leg design the Patagonia Essential Boxer Briefs are ideal for everyday use as well as on the hill. Patagonia Essential Boxer Briefs (3") Features: Moisture-Wicking, Breathable 95% TENCEL™ Lyocell and 5% Elastane Jersey Fully Functioning Fly The Contoured Pouch Provides Friction-Free Support Impeccably Crafted with Flatlock Seams A Bulk-Free Fit, with Ergonomic Shaping and Patterning The Anti-Roll Comfort Waistband Fair Trade Certified™ Sewn Weight Approx 91g