Clearly i had to modify a few things so it became a bit of a project for me (which i dont mind). I adopted a 4 week old baby dwarf hamster so the wheel that it came with (5in) is ok.. for now ..but i will have to take if off soon since they do need a bare minimum of 6 1/2 in wheel ..this cage is no suitable for syrian hamster is much too small but for my dwarf it will do for the space i have. Love the colors adds more cuteness to it ..a bit tricky to assemble but it didnt took that long 20 min approximately so far so good