Combination lock soft drink can cover/piggy bank

An insulated cover for a 375ml (standard Australian, 67 x 130mm) soft drink can, with screw-on top and four digit combination lock to keep your drink safe from your work/school mates.

With an alternative top which has a coin slot, it can instead be used as a piggy bank/ coin safe.

Another alternative top has a hole for a straw, with a screw-in plug.

For the truly paranoid/security conscious, there is optional provision for a chain/padlock so it can be secured to another object.

Desig