Final answer:
Ingress and egress in dressing refer to the ease with which one can put on and remove clothing, respectively. These aspects are crucial for clothing design, particularly for individuals needing easy-to-wear fashion due to mobility issues or disabilities.
Step-by-step explanation:
When Mairs mentions the importance of "ingress and egress" in relation to putting on clothing, she is referring to the concepts of entering into and exiting out of the clothing easily. The term ingress relates to the ability to put on clothes without difficulty, while egress refers to being able to remove them with the same ease. This concept is critical in fashion design and for the comfort of the wearer, especially for people with mobility issues or disabilities who may require clothing that accommodates their specific needs for getting dressed and undressed.