Mahavira Tents [India] Private Limited offers Waterproof Military Army Tents. Mahavira Tents [India] Private Limited manufactures a range of quality tents. The Waterproof Military Army Tents are manufactured from cotton canvas waterproof 450 gms per square meter natural white or olive green. In Waterproof Military Army Tents, the inner tent is provided with extra inner lining for extreme weather conditions, stove pipe opening in roof optional and also available with groundsheet to fit tent.