Water Proof Nylon Material: to Avoid Rain and Water Penetration. Water Proof Nylon Material: to Avoid Rain and Water Penetration. Material:Muslim prayer mat with compass are made of high quality polyester fiber, waterproof nylon material. Foldable prayer mat with compass: Islamic prayer blanket has a compass on the storage bag that helps you find the prayer direction. The travel prayer mat can be easily folded up and stored in a button pocket. Anywhere you go, Anywhere you Pray.