R Chattopadhyay is a Professor and Head of the Department of Textile Technology at IIT Delhi, India. His research interests include yarn manufacturing, staple fibre spinning, engineering textile products, quality and process control, and pressure garments. Sujit Kumar Sinha is a Professor at the Department of Textile Technology of the National Institute of Technology Jalandhar, India. His research interests include staple fibre spinning, comfort, yarn structural mechanics, nonwoven, carpet characterization. Madan Lal Regar is an Assistant Professor at Uttar Pradesh Textile Technology Institute, India. His research interests include compact spinning, staple fibre spinning, comfort, weaving process, yarn structural mechanics, and textile testing.