How to take a shower in a cast<br>Purchase a cast cover. This is probably the easiest means of waterproofing a cast, as it takes care of some work for you. You can ask your doctor or pharmacist about cast covers.
You cannot waterproof a cast.
( z1 possible :polarity - :ARG1 ( z2 waterproof :ARG0 ( z3 you ) :ARG1 ( z4 thing :ARG1-of ( z5 cast ) ) ) )