The Dog Helios Icebreaker Extendable Hooded Dog Coat is inner lined with Heat Reflection Technology, a specially developed lightweight inner barrier that reflects back natural body heat back into the body. This stylish dog coat also features a dual extendable hood design with dual jaw-strings that extend and cover a larger portion of the facial area to prevent colder air from entering. The sleeves offer elastic stitching that conform to proper leg girths with a waist buckle that adjusts to various dog chest sizes to further seal out the outdoor frigid air temperatures while offering a more premium and comfortable fit. The exterior shell of this high-quality dog coat is waterproof coated and features reflective tubing and printing throughout the body. It is available in multiple sizes and colors.