The Parka Swedish M90 is a cold-weather outerwear garment initially used by the Swedish Armed Forces. It is designed to provide protection and insulation in harsh weather conditions. The "OD" in the description typically stands for "Olive Drab," indicating the color of the parka.

The Swedish M90 parka is known for its durability and functionality. It features a thermal insulated design, which helps to keep the wearer warm in cold temperatures. The insulation material is typically synthetic, such as polyester or a blend of polyester and other fibers. 

The parka usually includes various functional elements such as a zipper front, button storm flap, multiple pockets for storage, a hood with adjustable drawstrings for added protection against the elements, and elastic cuffs and waist to help seal out the cold air. 

Overall, the Parka Swedish M90 is a reliable choice for cold weather conditions, offering thermal insulation, lightweight, and durability, which makes it suitable for outdoor activities or military use in colder climates.