If you are willing to travel this store has stock available now.
The Technicals 20-litre Dry Bag is a handy way to keep essentials safe. The roll-top closure completely seals out moisture, with taped seams for extra reassurance. The compact and lightweight design mean it easily fits into any rucksack or daysack.
Have not had a chance to test the items yet due to current restrictions but they look pretty good quality and good value for money