Hair nets are worn solely for hygienic purposes and to limit cross contamination between the wearer’s hair and anything in their surrounding environment; hair nets are most often seen when handling food or when working in a clinical setting.

The elasticated cap top allows for a "one size fits all" and helps to keep the cover firmly in place over any hair type or style while in extended periods of use. These hair nets are disposable but, unlike mob caps, they can be washed and reused so long as they remain in an undamaged condition.