Catheter bags

A wonderful old lady I used to visit fixed her catheter bag to her thigh with a rather sexy garter!

On a more serious note, my OH had velcro tapes to hold the bag to his thigh at whatever level he wanted.

some people keep a strategically placed blanket or similar.

https://www.gransnet.com/uploads/talk/202208/medium-471621-screenshot-20220807-192057-samsung-internet.jpg https://www.gransnet.com/uploads/talk/202208/medium-865508-screenshot-20220807-192130-samsung-internet.jpg

Found them.

Ebay ... Amazon

I have witnessed this and the person was issued a leg bag which the urine bag slots into, theyre brilliant. Because they are elastic, they can be moved up the leg.

The 1s that I saw were issued by the district nurse but surely they can be purchased.

I have a look for you.

Leg bags are obviously smaller so need emptying more frequently

Your sister should wear something like this, which sits on the thigh, so nothing much shows below the knee

catheter bag

I agree with FarNorth.
Baggy trousers

Baggy trousers?