Heavyweight One-Piece Union Suit _Google Hydration These F-1B trousers are part

These F-1B trousers are part of the ECWCS designed for Extreme Cold Weather use for the US Aircrew members stationed in Extreme cold static Areas

Compatible with 100 Ounce / 3 Liter capacity bladder

Customers find that this is a great jacket for cool to cold weather

first responder

Quick-release buckle on the front

Heavyweight One-Piece Union Suit _Google Hydration These F-1B trousers are partThe Heavyweight Union Suit is the ultimate blend of comfort, durability, and warmth. Crafted from 100% cotton, this union suit is designed to keep you cozy during the coldest of days while offering breathability and softness that you will love. Forget about annoying tags scratching at your skin; our tag less label ensures maximum comfort all day long. The button up design extends from the neckline down to the crotch, allowing for easy dressing and