EUC, Color: Soothing Sea The Baby Merlin's Magic sleepsuit is the original swaddle transition product. The Baby Merlin's Magic sleepsuit helps establish good sleep habits and provides parents peace of mind that their baby is getting adequate rest for proper growth and development. The sleepsuit is designed for back sleeping in the crib at the recommended room temperature for babies. Proper fit and timing of introduction of the sleepsuit are critical to the safety and effectiveness of Baby Merlin's Magic sleepsuit.