I’ve spent £££ on clothing trying to keep my ass dry and nothing has worked, wet chamois is no fun on a 5 hour ride. Even if you get an improvement your still grinding all the crap into your nice new gear and it’s ruined within a few rides. The only solution is to stop it getting up there in the first place. As many have suggested, a mudhugger is an excellent option. This thing twisted my melon it is so good at protecting me and my very expensive dropper. It still amazes me when I look at my saddle and it’s completely dry after the crap I ride through, best £25 I’ve spent on the bike in 2 yrs. Never gonna win a beauty contest but dam it works.