Review on 🛏️ RayTour Bed Sheet Straps - Corner Holder for Sheets, Fitted Sheet Stays, Mattress Clamps, Suspender Clips, Garters, and Fasteners by Amy Jackson

They fit under the mattress so installation is not easy except on smaller beds. I used them on a full bed and they were easy to put on and secure. The clip holds up well. I also tried on king size. Much more difficult to install with a larger mattress. They must be fully extended, and even then they will be stretched to the maximum as the king turns from corner to corner. They bounced off when changing the sheets unless I carefully removed them and attached them to the mattress topper. Center to center on a king would be fine, but they are too short to easily use from corner to corner. The clip is strong and stays attached when attached. Overall I'm happy with the purchase, but I would only apply this rating to below king sizes. Would not recommend for a king.