comfortable enough but slides [SEP] i found this pillow comfortable i like to lay in the tub because of my back as well as not having enough at the base of the tub to lay back my head it would be up against the wall i use this pillow on the side and put my head on the side of the tub and lean by shoulder against that wall of the tub that faces out it is smooth but the suction cups do not hold very well i know this is peculiar rating as i use the pillow differently than most still it is better than the rolled up towels i used to use so i will give it stars