Worn about twice. I wore an undershirt underneath. amethyst Amethyst Combi-undershirt 50cm ■Features (from the official website) ・Safe for babies with sensitive skin. ・Snap closure at the crotch makes it easy to change diapers and prevents the garment from riding up. ・Gentle on sensitive skin Uses "La・MorfetⓇ" (La Morphe), a material that uses only fiber processing agents confirmed to have almost zero allergens. It can be worn with peace of mind even by those with sensitive skin. The material is cotton with good moisture absorption and breathability.