Criteria refer to the yardsticks of any process or standards that a product must meet. The influencing factors establish the features desired in the product to be an effective entity in serving the purpose of specific user in a condition where one has to work. In case of apparel design, these features are the criteria that ascertain what the product ought to or not do to perform its purpose, according to needs of the wearer. For example, for the sportswear, the designer's significant outside influences (perspiration, unrestricted movement of body parts) suggest criteria that the product must keep the wearer dry by transferring the moisture; flexible and stretchy enough to follow body contour; to have reduced resistance against the atmospheric elements on the athlete during motion yet withstand body friction, strain, and motion during play; to allow air circulation; not be damaged by impact; be easy to put on and take off and care for; comfortable to put under other clothing without being bulky and be attractive. If expected weather is cold, it must also keep body warm during action.
Beside this there are certain regulations as acts, enacted by the governmental agency or industry, which set minimum acceptable performance standards and their freedom from the contents that may affect the health of the wearers. A few examples of such regulations include Flammability act, prohibition of the use of banned amines as dyes, various eco-standards, etc. All the garments need not to be as per the established standards but for certain apparel categories specific regulations are considered compulsory. For example, certain children's wear is required by law to meet government flammability standards.
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