There is disclosed apparatus comprising a pair of bodies of foamed plastic material having inner sides disposable on opposite sides of a water faucet or the like, and means for forcing the bodies toward one another, when so disposed, in order to cause the inner sides to be deformed into conformity with the faucet and to be tightly engaged with one another in surrounding relation to the faucet adjacent the wall from which it extends, the forcing means serving to hold the inner sides of the bodies in such tight engagement until released to permit removal of the bodies from the faucet.