Merrell Women's Encore 4 Tall Zip Polar Winter Boots Color - Expresso Size - 10 Merrell Women's Encore 4 Tall Zip Polar Boots. Use the drop down menus above to choose from available colors sizes. Fast Free Shipping, 60 Day Returns, Long Time Trusted Seller. Slushy cold days are no match for Merrell's Encore 4 Tall Zip Polar boots, thanks to their waterproof construction, toasty M Select WARM insulation and a grippy rubber outsole. M Select DRY waterproof breathable membrane Toasty 100 g M Select WARM synthetic insulation Seam sealed for complete waterproof protection Waterproof leather upper Soft faux fur lining Inside zip for easy on-off EVA foam insole Air Cushion heel for stability and shock impact Molded nylon arch shank EVA foam midsole for added cushioning and comfort M Select GRIP rubber outsole for durable traction New without box! Zappos pallet - shipped in replacement box!