This is aつけ襟 (tsuke-eri, detachable collar) from an artist active on Instagram. It's a detachable collar with scalloped, bunny-ear-like details. It's reversible. Front: Liberty Umbria Back: Pink Check I'm selling it because my daughter refuses to wear it. Brand new, unused. Collar size: Neck circumference approximately 35 cm Suitable for ages 1 to 7 years old (individual differences apply) The ribbon is attached to a hair tie and can be removed.