ATO™ Mid Loft Jacket


The ATO – ALPINE TERRAIN OPERATIONS™ MID LOFT JACKET is designed to provide warmth and wind protection when static while avoiding overheating during movement. Constructed with a durable wind resistant nylon fabric that is lightweight and packable. The Polartec® Alpha® Direct insulation is a uniquely constructed knit that does not require a lining layer, reducing the overall bulk but maintaining a high Clo value. The insulation is also highly breathable and designed to allow excellent ventilation during high activity in cold temperatures. Designed to fit over our G3/G4 UNIFORM and Aclima® baselayer tops, and under the COMPACT ALPINE OVERWHITES and under any high lofted outer layer. It can be worn as a concealment outer layer in warmer temperatures and an insulation layer in the cold. It has a roll out helmet compatible hood that is stowed in the collar. Made in US from US materials.

  1. Stowable hood with fit adjustment
  2. Fleece lined collar
  3. Thumb cuffs for increased thermal protection
  4. Polartec® Alpha® Direct lining
  5. Zippered pockets with glove compatible pulls
  6. Interior zippered chest pocket

In order to provide the best possible service to our customers, we ship all domestic purchases via UPS. Please note that while we do offer expedited service through UPS, in-stock orders are generally processed in 2-3 business days.
Items not in-stock at the time of order will automatically be put on backorder status and shipped when available. Orders will be partially shipped unless specified by the customer. The customer is responsible for all shipping charges.
We do ship to our valued customers at APO/FPO locations but do so only using USPS.


We will gladly accept any returns on the condition that the item includes all of the original packaging, instructions, receipt, return authorization, and has not been laundered. Returns will not be accepted on closeout items.
Items must be received within 60 days from date of purchase. It must be unused and undamaged. All returns will be carefully inspected before giving a refund, credit or exchange.
The customer is responsible for any and all shipping charges. Returns may be subject to a 10% restocking fee.

Contact us, or log in to your account to start a return: