Heatable, sleeveless vest for men.Integrated heating elements in the back area at kidney height.Heated vest fits under any existing clothing system.Lithium packs sit in the inner vest pockets under the ribs.Can be combined with all Lenz lithium packs (available to purchase separately).Quick-drying, windproof, breathable and abrasion-resistant material.Fleece insert in collar .Small packing size and can be folded up small.Machine washable at 30 degrees. Compare prices from: Lenz in Man's Sportswear