They're called Multi Dry and hold up to 20 litres of moister, you place hang them from the bike and when they feel damp, place them on a radiator for about 20 minutes. I got them from the SportsbikeShop.
Not my bag but if you’re into moisture control a tray or salt will absorb it - cheap as chips and if you snaffle a couple of the misses’ oven trays you can periodically stick the salt trays in the oven to dry them out again.
That’s him, in the Land Rover, he just drove up swiped your blankets..... Said he needed them for something really important......
I have one of their covers. Superb cover. I was looking to buy another one recently but they didn't have a template for it. Well worth a look.