why is tumbler not made with   a piece of cloth  ??
(please try to give)

1. A tumbler is not made of cloth. This is because the main function of a tumbler is to fold water and a piece of cloth does not hold water. While plastic is very good for holding water and thus is mostly used to make tumblers.

Other answers:

2. This is because generally use a tumbler to keep a liquid. A tumbler made of a piece of cloth cannot be used to keep water. So, a tumbler is made with a material (mostly plastic) which has a property to hold the liquid.