watertight wallet
a company could produce a wallet of a watertight fabric
the fabric should atleast have a water column of 10'000 mm
the wallet should be closed with a watertight zipper
the wallet could be sold at a premium
as outdoors and camping equipment
the alternative for a camper
is putting a wallet in a 1 liter translucent plastic bag
which is time consuming when paying at the shop
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