Ultrasonic Muscovy Down™
5 lb. 12 oz. (including Boot Covers and Stuff Sack)Pack-Down™ Coverall
The Pack-Down™ Coverall is built for the coldest hunts of the year. So warm you'll want to put it on after reaching your stand, it packs easily into the included compression stuff sack. Filled with 750-fill treated Ultrasonic Muscovy Down™ and wrapped in a windproof shell, it seals out drafts and locks in heat. Insulated boot covers let you hike in your preferred footwear while keeping your feet warm once on stand. Ideal for hunters with tough hikes in, it allows you to layer up quickly and easily. One piece of gear, full protection, minimal layering, all-day comfort.
Insulation
Temperature
Shell Fabric
Weight
Why We Made It
The Science of Staying Warm
Human temperature regulation follows the core–shell model, where the body prioritizes keeping the core (head and torso) warm while allowing the extremities, the shell, to cool if necessary.
In cold environments, the brain rapidly reduces blood flow to the hands and feet through peripheral vasoconstriction to conserve heat for survival. This is why fingers and toes are especially vulnerable to getting cold.
Cold extremities are usually the result of insufficient insulation across the rest of the body, not just exposure at the hands or feet.
If the torso, arms, and legs are losing heat, the body further restricts blood flow to the shell, making even the warmest gloves and boots ineffective.
By contrast, when the entire body, especially the core, is well insulated, overall heat loss drops and warm blood continues to circulate to the extremities. This preserves dexterity, strength, and performance in the cold.
In practical terms, warm hands and feet start with full-body insulation. The body functions as a single thermal system, not isolated parts. To keep the extremities working, the whole body must be protected.
