You get what you pay for
I bought this item to cushion my elbows while sitting and sleeping.  The ribbing at the top and bottom is presumably supposed to stretch to fit the arm and keep the thing in place.  After using it twice, the ribbing is stretched out and does not hold it in place at all.  The support portion is stiff foam rubber which does not really conform to the elbow.  I'll spend a little more money next time and get something that actually works.
Rating: 1 stars