Hi, I am Chandra Prakash from Vrindavan Handloom Collection, Mathura, India. We are manufacturer of 3 Layer Cotton Masks. We use a 5-6mm Lycra Elastic with an adjuster. We also make pockets masks as well. We use only premium & pure cotton fabric and we have more than 2000 designs in fabric. We have also supplied our masks worldwide through FedEx & other courier companies. In India, we sell these masks on Amazon and other E-commerce websites.