To use the mattress anti-slip fixation device, simply attach the round clip of your bed frame and secure it to the mattress. This easy installation process requires no drilling or additional tools, making it a convenient option for anyone looking to enhance their bed's stability. The device is for various bed types, including soft beds, wooden beds. Features - Color: White -Material:Iron - Size: 16.50X10.50X5.00cm/6.48X4.13X1.97in -Bed frame compatibility: designed to work seamlessly with bed frames, ensuring your mattress remains securely in place regardless of bed position -Antislip mattress support: provides a stable and secure grip on the mattress, preventing any sliding and enhancing overall sleep quality -Universal fit: compatible with a wide range of bed types, including upholstered, and metal wooden bed frames, as well as rv mattresses -Increased height and width: offers stability by featuring an increased height and width, ensuring the mattress stays firmly in place on the bed frame -Versatile application: suitable for use with various mattresses and bed frames, making it an excellent choice for both use Package list: 2 x Mattress Retainer