Boncas Adjustable Sheet Holders Fasteners Grippers Suspenders for Various Bed Sheets Hospital Beds Inflatable Beds Adjustable Beds Fitted Sheets Flat Sheets Keep Bedsheets in Place (Set of 4, Black) Professional adjustable design to fit for any kind of beds and sheets. Ideal solution for comfy tight sheets. Quality chrome and round clips with inside plastic teeth that would hold the bed sheet tight but will not ruin the sheet. Easy to operate. Set of 4.