My church has been making wheelchair quilts 30x40 for years. We've never had anyone tell us they got caught in the wheels of the chair. The flannel doesn't slide off the laps very easy. I made myself one and use it on chilly Florida mornings while I have my coffee. I also put it on my side of the bed for a little extra warmth. I always wash the flannel in hot water and dry it on high heat to shrink it. I'm amazed at how much it shrinks.