Bottoms are an apparel term used to describe the layers of clothing worn on the bottom half of the body. Bottoms may be in reference to undergarments or outerwear.
About Ski Pants:
Ski pants are pants specially designed for protecting the lower body against cold weather when skiing. Ski pants are made in wide a variety designs, are generally made from waterproof and stretchable fabrics and feature insulating materials which have been developed to maximize heat retention.
About Winter:
Winter is the coldest period of the four seasons. Winter occurs between fall and spring; during the months of December, January, and February in the northern hemisphere; and during June, July and August in the Southern hemisphere. Winter is characterized by cold weather, with snow and ice on the higher latitudes.