The Extreme Warmer jacket will keep your dog warm even in the most challenging conditions. The foil inside the jacket reflects the dog's body heat and gives the jacket significant, extra warmth. The jacket has been designed to offer protection to your dogs key muscle groups and the waterproof surface material is soft and comfortable. The high tricot hood warm's the dog's neck and can be lifted to protect the ears. High visibility 3M reflectors improve safety in the dark.