The innovative SWADDLE UP with patented wings, allows babies to sleep in a more natural position, with their ARMS UP , so they can self-soothe, via sucking. Medical research has shown that when babies can self-soothe, they can sleep for longer. The SWADDLE UP is intended to be used FROM DAY ONE and can help parents lay a strong foundation for sleep, from birth. With a 3.5 TOG viscose from bamboo built-in quilted blanket, the SWADDLE UP EXTRA WARM provides superior warmth and comfort in extra cool temperatures.