As a general guideline, clothing should be lightweight, loose fitting, hard-wearing and easily washed. In India's hot summer months, cotton clothing is much more comfortable than man-made materials like nylon. In the winter months (Dec-Feb) North India (particularly Himachal Pradesh and Punjab) can get very cold so you should bring plenty of warm clothing. You should bear in mind that India's conservative attitudes towards dress, particularly in remote areas. Women, and also to a certain extent men, will find that the way they dress will often determine the degree of respect they receive from both men and women. The issue is not nearly of such importance in places like Mumbai (Bombay) and Goa where 'western' dress is more acceptable. In certain areas and religious sites your Tour Leader may ask you to dress conservatively. Out of respect for local values, we ask that you follow your Tour Leader’s advice at all times.
Make sure you allow for climate changes and remember that even in very hot countries, night-time and early morning temperatures can be extremely cold. You will generally find it is better to have several thin layers rather than one thick layer as it gives you more flexibility and warmth. A fleece can be invaluable and double as a pillow.