Waterproof Snow Hiking Boot

Eyushijia was registered as a trademark with the United States Patent and Trademark Office on January 29, 2018, under Serial Number 87775429 and Registration Number 5737256. The trademark covers a range of apparel categories including clothing, footwear, and headgear. According to USPTO records, Eyushijia products were first used in commerce on December 15, 2015, following initial use anywhere on August 18, 2014. The word "Eyushijia" has no meaning in a foreign language according to trademark documentation.

Winter hiking boots in this category typically incorporate synthetic insulation materials for thermal protection in cold weather conditions. Common insulation types used in snow boots include Thinsulate by 3M, which uses microfibers to trap air and maintain effectiveness even when wet. Insulation is measured in grams per square meter, with weights ranging from 100 to 1000 grams depending on intended temperature range. Waterproof winter boots often use membrane systems that prevent water infiltration while allowing perspiration to escape. The combination of waterproof membranes and insulation serves different protective functions in cold and wet conditions.