Exped fold dry bags are perfect for keeping your things safe and dry. Although they're not immersion-proof they'll withstand a brief dunking, making them perfect for clothes, papers or even a wallet or mobile phone. They're also ideal for holiday packing, maximising use of space inside your luggage while not adding much weight.
Aquapac are the class leader in waterproof bags. They carry an impressive IPX8 rating, and most bags are suitable for immersion to up to 5m (15ft). There's a wide range of bags available, whether you need to look after your mobile phone, your camera or just need to protect your car keys.