Abstract: An airway is adapted to lie in a cheek pathway in a user's mouth, traversing a path from a position outside a user's lips, between a user's otherwise closed lips, along a user's inner cheek wall outside a user's dental arches, curving dorsally of a user's rear-most teeth through a user's rear-jaw space, and reaching into airspace over a user's tongue in a user's rear-mouth cavity. The airway provides supplemental air to a user's rear-mouth cavity independently of a user's restricted nasal airways while a user's lips remain closed. The airway is adapted to be manufactured in-line and folded by a user to fit a particular user's cheek pathway. There are single-cheek and dual-cheek versions. Extensions of the airway can anchor it about a user's lips or ears. A cheek pocket anchor, formed of a resilient filament, is adapted for placement adjacent to a user's inner cheek wall within a user's cheek pocket and is user-adjustable to fit a particular user's cheek pocket.