The Simms RiverTek Heavyweight Zip Top & Grid Pant features Polartec Power Dry fleece, and are perfect to wear under waders - alone or over Midweight underwear. The Zip top uses 100 series, 4-way stretch fleece, while the pant features Polartec Power Dry grid fleece. This grid fleece is new cutting edge technology to help with wicking and resisting compression. Trust Simms to provide you with the warmest underwear and outerwear available today.

Maybe being located in Bozeman, Montana has something to do with the warmth, design, and success of the Simms line of performance clothes!

Note:   If conditions are very cold, we recommend the RiverTek Midweight base layer as a must, with this as your insulating mid-layer.

Product Features:

• Polartec Power Dry fleece with non-pilling exterior
• Wicking performance lasts the life of the garment
• 100 series, 4-way stretch
• Thermolaminated, zippered chest pocket
• Anti-odor treatment applied to fabric resists growth of odor causing bacteria
• Durable non-pilling surface spreads sweat out over a wide area for rapid evaporation
• Zip Top allows for quick ventilation
• Fabric weight: 100 wt. Fleece

Colors:  Zip Top: Olive, Red, Jasper  Pant: Olive    Sizes: S, M, L, XL, XXL

Click the ''Learn More'' button below the image for our Size Chart.