A little caution on recommending flushable wipes Corvus. Even though it is probably important that you pamper your aged posterior.
Firstly there is no industry standard for the term flushable - so long as they go around the bend it appears to be enough. But more importantly is the claim that they are biodegradable. There is evidence that flushable wipes "do not disperse in water in any time frame (other than perhaps geological), have varying biodegradability and essentially maintain their structure throughout their entire lifetime in the waste water system". There have even been reports of blocked septic systems where families have switched to using wipes instead of TP.
Whether those reports are convincing or not, there are good
studies that shows that TP breaks down very slowly in Alpine soils (due to the cold, wet soil conditions). Introducing wipes (or anything that breaks down slower) into these regions would be worse. For the sake of making a low impact on the wilderness you visit, all Bushwalkers should be encouraged to use TP - and preferably TP that has a fast or high biodegradation rating - and should avoid anything else. It would be better to carry wipes out or dispose of them into toilets that will be removed, but please don't bury them in alpine soils.