The maintenance manual is very light ideal despite wood and thus also for the elderly. It really comes down to all the sites on the back, without having to dislocate what is not recommended for a herniated disc or extreme muscle tension. The pad is a nice size and holds both ointments and gels well as drips nothing. And you have creamed the whole back in no time. Is also good to keep clean: simply wipe and you're done.
From the stability ago I can not say anything, but because I change no pads, should hold the attachment means of VELCRO® strips relatively long. From the manufacturer directly, you can buy more, the individual essays, I have unfortunately not yet seen here at Amazon until the sponge applicator. And the adhesive strip should loosen the wood part as a Rezensient writes, one can indeed a new stick back. VELCRO® strips there anywhere to buy by the meter.