I have only used this once and it worked really well. I am a 5ft1 woman, so the kid's medium worked well for me, coming just above the knee.
Bloccs Waterproof Cast Cover Adult Small Arm Waterproof Cast Cover for Shower
Bloccs Waterproof Cast Cover, Child Arm
Bloccs Waterproof Cast Protector
bloccs waterproof cast and dressing cover child full leg medium
BLOCCS Waterproof Cast And Dressing Cover - Child Arm XL. Only used a few times.
