Introducing the Baby's Firsts Collection! Celebrate the good times - month by month, size by size! Adorably festive onesies for a year’s worth of memorable firsts. Shown here in our Small Santas print, perfect for a first Christmas. Crafted in bamboo fabric, these rompers are crazy soft with a smooth, silk-like texture. Bamboo is breathable and it keeps littles cool & comfortable in the summer and warm & cozy in the winter.