Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: Is this knit material?  I bought several "Invacare Fitted Hospital Bed Bottom Sheet", but it moves with the patient when sliding them upwards.
Document: This bed sheet is the wrong material for a hospital bed. It is very slippery, and will not stay in the corners when bed is adjusted up (headrest) or down (footrest). When pulling a patient up higher in the bed, the corners come out of the mattress. I am not happy with this sheet and would not recommend it to anyone.
I received this product quickly after ordering it. I have used it and the material is very good quality cotton. I like the thickness. There is ample room for the hospital bed to move up and down and not become constricted by the sheet. I find it very comfortable as well.
I bought these because they were suppose to fit a 3/4 size hospital bed, which is larger than a twin but smaller than a full size. They did not fit my bed. They are the same size as twin sheets. They are made well and a good sheet but I would not have spent this much on twin sized sheets and then have to rig them to stay on the bed.
These sheets are quite nice, unfortunately the packaging is all wrong. I ordered 3 fitted sheets and received 2 fitted and 1 flat (marked as fitted). Now I have found that the fitted sheets are different sizes. One fits the bed and the others have to be held on with straps due to how small they are.
most of the sheets I have bought did not work these doand are more comfortable for himfeels good as he is bed ridden
A good product. The sheet fits the matress on hospital bed like a glove. Shipped quickly. Priced reasonable. Will buy from this merchant again.
I was hesitant at first to order, but gald I did. Sheets fit great on my hospital bed at home
I guess you get what you pay for, I didn't pay that much for them, so I can't expect excellent quality. They're well-made, don't pulloff the corners, but I wouldn't want to sleep on them.
There is no comparison to theses sheets to ordinary household sheets. Soft to the touch and holds well to the bed. A smooth yet fuzzy warmth is enjoyed. Just exactly the feel and comfort to one who is confined to a bed. Well worth the money.
Answer: I have no problem. It reacts like normal bed sheets