I'm looking for some socks I can purchase on the net and send to my Dad. SIL says she can't find anything locally. He's often waking in the night and going to the kitchen to grab a snack and she's afraid he's going to slip on the tile. Socks don't want to stay on him at night, but he can't sleep with really tight restrictive socks either. Has any of you ever come across a good skid resistant sock that tends to stay on the feet better at night? Thanks!