MATERIAL: This sheet fastener is made of strong chrome-plated metal clips and heavy-duty elastic bungee cord to hold your sheet securely. Easy to put on and hold the sheet in place without fixing the sheet, the adjustable length allows for desired tension. STABLE TRIANGLE DESIGN: Triangles are known to be more stable than other shapes. So our triangle sheet carrier can keep your bed and sheets always tidy. ADJUSTABLE ELASTIC: Wider elastic provides stability and stronger grip for heavy-duty use; Easy to install and fix corners, lifesaver! WIDE COMPATIBILITY: Our sheet retention straps are suitable for both fitted sheets and flat sheets; this versatile sheet gripper is suitable for all types of bedding, and these straps are sturdy in construction, your sheets will stay in place for a long time, keeping Your bed will always look great.