Abstract: In a tub - shower environment comprising a tub enclosed on three sides by walls and open on the fourth side, where spray from the shower is intended to be retained within the tub - shower enclosure by a flexible shower curtain suspended from a curtain rod by hooks engaging grommet holes in the curtain and the rod, and extending across the open fourth side, between walls defining the ends of the tub - shower enclosure, there are provided mating pairs of hook-and-loop pads backed with waterproof pressure sensitive adhesive. The pads are positioned both on a vertical edge of the shower curtain and on the wall adjacent the shower curtain edge. A disposable rule is provided with means for attachment to a shower curtain hook.