When it comes to exploring in and around water, the Undercoat Water Jacket offers warmth for dogs who cant resist making a splash in the colder, shoulder seasons or who are prone to getting cold when wet. Its an amphibious jacket that thrives in wet environments, using a formfitting laminated neoprene for insulation that stretches and moves with dogs as they romp and swim. Super-soft, articulated stretch StormSleeves are engineered to seal in warmth while maintaining freedom of movement.