Features: Main MaterialMade of elastic bungee cords and metal clips, these bed sheet fasteners provide stronger and sturdier grip for heavy duty purpose, no worries over the clips falling apart on use. Main FunctionKeep your sheets tiny all the time, hassle-free about pulling and tucking to straighten out your sheets every night, its time to say goodbye to messy and wrinkled sheets. Adjustable Length The greatly adjustable fasteners allows desired tension and can be adjusted from 32-58cm/12.6-22.83inch to fit all edge of sheets. Wide Application Secure fitted sheets, flat sheets, mattress pads, and even ironing board covers. User-friendly, you can apply and remove simply, make your life easier. Easy To UseThese bed sheet fasteners are simple and user-friendly. No tools, just hold the mattress and attach the clip to the edge of the sheet. Specifications: Type: Bed Sheet Fastener Material: Iron, Elastic Webbing Color: White Length: About 32-58cm/12.6-22.83inch(adjustable) Package Included: 4pcs x Bed Sheet Fastener Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement.