Sufficient quantity: you will receive 8 black adjustable bed sheet straps with a width of 2.5 cm, our bed sheet straps can be easily adjusted to the required size to meet your different needs Preferred material - The mattress stretcher is made of high-quality nylon, which is highly elastic, does not easily deform when stretched, and is robust and durable. The clip is made of strong stainless steel metal and is located in a plastic fastening system, which can protect the fabric from damage Adjustable design: the bed sheet tensioner can be adjusted from 30 cm to 130 cm, the loose tension strap can withstand a stronger pulling force, keeps the corners clean, protects the fabric from damage, no more mess or wrinkles, a good choice as a bed aid Easy to use - No tools required, simply fold the excess corners of the sheet, place the sheet in the plastic clip, press the metal button to secure the sheet, the strap length can be stretched as needed Versatile - Can be used to secure bed sheets, mattress protectors, ironing board covers, tablecloths, sofa covers, bedspreads, and anything else you want to attach to a flat surface