Selk’bag has been designed to give maximum comfort and warmth while providing the greatest freedom of movement. The Original and the Lite offer different levels of warmth depending on your lifestyle. This sleeping bag suit functions with ease to stay warm from hanging out on the couch to spending time outside on a chilly night. The Lite is perfect for outdoor activities in warmer seasons and any indoor activity, from playing to sleeping. The Original offers increased features for family campers and outdoor enthusiast for year-round use.