The Helios Weather-King Ultimate Windproof Full Body Dog Winter Jacket is inner-lined with exclusively developed Blackshark Heat-Retention Technology that reflects and maintains your pet's body heat. This innovative fabric is lightweight, waterproof, impermeable, windproof, snow proof, breathable, and tear-resistant while retaining any lost body heat during those frigid weather conditions. Additionally, the Helios Weather-King Dog Jacket features a waterproof-treated, lightweight polyester-blended outer shell with added proprietary coatings that enhance the durability. The outer fabric also features reflective 3M™ tubing for safety during nighttime strolls or during any extreme activities and Velcro® adjustable sleeves to further prevent any colder air from seeping out those areas. The Weather-King Dog Jacket also features an additional adjuster by the neck area and the hood, which completely opens closer to the facial area to protect the face from frostbite. Get Outdoors with Helios Dog!