evo.com | Flylow Activewear Pants > The Flylow Puffer Pants deliver specialized warmth with insulation focused on your thighs for a perfect fit under your gear. These insulated base layers provide essential thermal protection where traditional long underwear falls short, keeping your legs toasty during those brutally cold days when regular base layers just aren't enough to maintain comfort and performance on the mountain. 40g Primaloft (R) Black Eco Insulation Gridded Furano Fleece 90% Polyester / 10% Elastane Strategically Placed Insulation Panels Stretch Waistband with Drawstring Pertex (R) Quantum 100% Polyamide | Flylow Puffer Pants Men's 2026 - 2X-Large Blue | Elastane/Polyester