The MTL Thermo Rogue 4 is the latest iteration of our elite winter hiker - our lightest, most athletic, most durable winter boot ever.

Best for: Winter Hike
Insulation:
200 grams Primaloft® Gold Eco Series synthetic insulation, Merrell's best mid warmth boot option for winter days out on the trail. Solarcore® insulation with Aerogel provides over toe and underfoot superior warmth while being extremely flexible and ultra-thin.
Waterproofing:GORE-TEX® waterproof membrane, exceptional breathability and waterproof performance
Traction: Vibram® Arctic Grip™ All Terrain outsole designed to effectively extend the winter traction season, due to the enhanced durability and versatility. Vibram® traction lugs specifically designed to increase traction and shed debris with each step.

Special Features:
• Bellows tongue keeps out debris
• 3D Print and TPU overlays on upper in wear zones for increased durability
• Molded TPU heel counter for security
• Gaiter D-Ring
• Snowshoe strap ridge for stability
• Cleansport NXT™ treated for natural odor control
• Rock plate for protection

Materials:
• Ballistic mesh and TPU upper
• Metal hook and eyelets for added durability
• 100% recycled laces and webbing
• Breathable mesh lining
• 100% recycled mesh footbed cover
• 5% recycled removable PU footbed
• Two part, dual density FloatPro™ Foam midsole
• Vegan-Friendly

Additional Measurements:
• Half pair weight: 1lbs-4.09oz, 570g