Mazu Pack

It's a waterproof backpack, for you to keep your stuff dry as you swim, designed by Kalong Chan, Bobo Chan and Sayaka Chan (we got the same surname but we're not relatives)

Presentation video made in Shek O

BTW, Mazu (媽祖) is the goddess of the sea who protects fishermen and sailors.
http://en.wikipedia.org/wiki/Mazu_(goddess)