It’s so easy even Grace can do this.
A real neat way to carry a change of clothes in your rucksack, whether your away camping with the family or on Scout Camp. This is called the SKIVVY Roll. It has been used by people in the military for years. Usually, patrol packs have limited space and this gives you a complete change of under clothes while taking up a very little amount of space. You could make a couple of these, and have several changes of under clothes.