It is a very handy way to safeguard your personal belongings from getting lost and ruined by salt or freshwater. These are not just useful for sailers or boating activities.If you kayak for example a backup in case you might be thinking of tipping over. It just makes the whole experience on water better knowing your stuff is dry.
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Pros
Protect your expensive digital equipment such as mobile phones and cameras, camcorders.
Cons
They might not look as nice as a gucci or michael cors.
Things have to load vertically, pro tip; don't put raspberries at the bottom.