I bought this for my stand-up 93-year-old mother, who has surgery on his right hip. They can easily attach under the mattress on the grate with ribbons and she is firmly under the mattress. My mother has it very much and she thanked, I bought her the help. Unfortunately, she could enjoy this one day, then she fell back so hard that she came to the hospital and only nursing home. I then removed the aid again and sent back. The withdrawal was carried out without difficulty and also crediting. I can recommend this part 100%. And thank you at this point for the problem-free settlement.