If you are willing to travel this store has stock available now.
Lightweight and tough waterproof dry bag ideal for keeping equipment and clothing dry during activities. With a hydrostatic head of 10,000mm, this bag offers waterproofness comparable to a tent groundsheet, meaning it can resist a good soaking.
Product code: 16000636 / 091507
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Features
Lightweight and pliable waterproof storage bag from Exped
Essential part of any kit list - from mountaineers and backpackers to kayakers and campers, whatever your activity this waterproof dry bag is ideal for keeping clothing and equipment dry.
Completely waterproof - with a hydrostatic head of 10,000mm, the waterproofness of this bag is comparable to a tent groundsheet, meaning it can resist a good soaking.
Taped seams - guarantee water protection and improve durability.
Folding top closure with easy squeeze buckle - allows you to seal clothing and equipment within the bag to ensure that your gear remains protected from water.
Haven't tried it yet but can see it is going to be very useful, good quality and value