These goggles come are regular fit goggles. 

Specifically developed for severe temperatures, the Desert Locust Extreme Weather Goggle provides best-in-class comfort and fog resistance for extreme environments. The dual-pane thermal lens and proprietary OcuMax® coating keep fog and surface scratches at bay, while comfort foam seals elements from the eyes. Like all Desert Locust products, the optically correct goggle lenses are interchangeable and engineered for maximum field-of-view.