Top brands can be on the pricey side so if you're on a budget grab a cheap substitute such as a silver car sunscreen, reflective tanning mat or wrap a circular sheet of cardboard in aluminum foil.

In this paper, we present briefly process, properties and application of glass mat reinforced nylon sheet.

You should always keep a Yoga mat, made of some comfortable materials. For lying postures use a woolen carpet and spread a clean sheet over it.