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Your infant boy's core will stay cozy in cold weather when dressed in the Outside Baby Merino Wool Long-Sleeve Bodysuit. Merino wool doesn't itch, and it feels soft and silky against your babe's skin. This natural fabric holds in body heat to keep your baby boy warm, but it breathes too, so he won't overheat. Plus, this Outside Baby bodysuit is easy to care for-just toss it in the washing machine with everything else and air dry.