To keep the insulation dry, it was necessary to frequently apply water repellent treatments to the leather. These treatments were seldom effective and often failed completely because the seams were unsealed. The glove insert protects the glove insulation from external moisture so your hands are more comfortable. Waterproof rubber boots keep water out, but they may be heavy, awkward, and ill-fitting. Rubber footwear doesn't breathe, trapping perspiration inside and causing discomfort.
Wet feet can quickly become cold because of conductive heat loss, especially in cold weather.
Many 'waterproof' leather footwear styles are made with leathers that are specially tanned to be water repellent and to resist water entry, but these leathers may fail to prevent leakage even at pressures as low as 3 to 5 psi. For Sales Assistance send an e-mail. For Technical Questions send an e-mail.