Duvet clip valid for blocking both duvet and duvet cover and for locking sheets to cover. It allows you to keep the quilt always blocked and rearrange the bed very easily. The snap button design makes it easy to use and does not damage the quilt: just put 4 clips on the corner of the quilt and then put click it, your job is done.Useful duvet clip, works great with thin or light duvet, like summer duvet. It does not fit thicker quilt over 2.54cm.Package included: 12 pieces clips for the duvet cover. Diameter: 34MM, Height: 16MM. Material: plastic, exquisite workmanship, smooth edges. Sheer color not white which you can see very well on quilts.Firm comforter and duvet cover prevents duvet cover and comforter from bunching or shifting. It makes life much easier. Note: The data are all manual measurement, please allow 1-3cm error, due to the light and display difference, there will be some color difference, depending on the physical item received.