[Adjustable Length]: 4PCS fitted bed sheet clips with elastic straps which can be adjusted from 12inch to 39inch. It is very convenient to adjust them to the length you need. [Keep Your Sheets in Place]: Bed sheet fasteners are easy to put on and will keep fitted sheets from sliding off from corners all night and keep your bed looking great all . Never worry about messy or wrinkled sheets again. [Fit All Kinds Of Sheet Sizes]: Bed sheet holders will be to fit all range of mattress sheet sizes including: Twin, Twin XL, Full, Full XL, Queen, and even up to sheets. This designed bed sheet suspender work well with all types of bedding mattresses and will grip your bed sheets firmly. [Durable Sheet Clips]: These bed corner holders are consisted of elastic straps, metal clips and built-in plastic clenching system which will grip your bed sheets firmly and protects fabric from harm and no damage caused to your bed sheet. [Wide Compatibility]: Our bed sheet grippers fit with various sheets, it could be used on bed sheets, hospital bed, sofa cushion, mattress pads, tablecloth covers, chair / boat / car / motorcycle seat covers, ironing board covers and more. Colour: black Material: polyester Original size: 30cm Extended size: 100cm Package Contents: 4 x Bed Sheet Straps Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.