[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, & 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.