Merrell Thermo Aurora 2 Tall Shell Waterproof Boots If you're looking for a hiking boot that'll keep both your feet and calves warm, then look no further. The zip-up Merrell Thermo Aurora 2 Tall Shell Waterproof Boots ($180) are 100 percent waterproof because of their M Select Dry Barrier layering, and with fleece lining and low-profile insulation, you'll never have to worry about feeling cold. Image Source: rei.com Merrell Thermo Aurora 2 Tall Shell Waterproof Boots $180 from rei.com Buy Now