The minimum recommended cage size for hamsters is 80x50cm of unbroken floor space. Below is a selection of cages which meet or exceed these requirements.
Most hamsters will enjoy a wheel in their cage to run in. This doesn’t have to be left in the cage all the time, but you should ensure it is large enough so that the hamster does not have to arch their back when running in it:
Syrian hamsters – minimum wheel diameter 28cm
Dwarf hamsters – minimum wheel diameter 20cm
Sawdust and woodshavings (unless the shavings are aspen-based) are not recommended as these can cause respiratory issues. Paper, cardboard, or hemp based bedding are suitable alternatives.