Warm protection: This baby onesie is designed with fleece and provides excellent thermal performance for the baby, effectively resisting cold weather and making the baby feel comfortable and warm Cotton collar: Specially designed cotton collar, can effectively block the wind cold, protect the baby's neck, so that the baby can feel warm and comfortable in the cold season Multi-purpose design: Not only can be used as daily wear, but also suitable for indoor sleeping or outdoor activities, providing all-round protection for the baby. At the same time, diapers can be easily changed to facilitate daily care