1.Wrapped in a layer of white,
A yellow treasure is inside me.
I don't have a lid.
You don't need a key to open me.
2.I have rivers but no water.
I have mountains but no trees.
I have roads but no cars.
I have cities but no people.
3.I come in different colours.
I can be long or short.
I can a part of the human body.
4.I live on the floor.
Sometimes you see me on the floor.
I am dark.
I leave no mark.
I disappear when the sun sets.
No one can catch me in any nets.