My son is a welder in Prudhoe Bay, Alaska and he works the night shift. This winter it's been -45 to -65 and he was only able to stay outside welding one hour at a time with his arctic clothing. We sent him Simms Rivertek tops & Bottoms and Guide fleece tops & bottoms. He can now stay out in the weather 6 hours!! If this stuff works this well in -65 weather, just thing how warm it will keep you while your fishing. Simms has hit this one out of the Park!

• Polartec® fabric technology with 4-way stretch
• Durable non-pilling surface spreads sweat out over a wide area for rapid evaporation
• Elastic waist and hidden fly
• Non-wicking polypro stirrups
• Anti-odor treatment applied to fabric resists growth of odor causing bacteria
• Wicking performance lasts the life of the garment
• Imported