Waterproof THE NORTH FACE Thermoball™-Boots . The waterproof Thermoball™ Lace Up Boots provide excellent comfort and eco-friendly materials. Featuring the OrthoLite® Eco Lt™ footbed, a cozy faux fur collar lining, and Thermoball™ insulation, these boots keep your feet warm and comfortable, even in wet conditions. Thanks to the waterproof DryVent™ membrane and durable rubber outsole, these boots offer optimal protection and traction.