Complex sentence: Masks are light in weight and attached using an elasticated headband or ear loops, they are transparent allowing the face visible for patient assessment by healthcare provider and reducing a sensation of claustrophobia experienced by some patients when wearing an oxygen mask.
Split into simpler sentences: Masks are light in weight and attached using an elasticated headband or ear loops. They are transparent for allowing the face to be visible for patient assessment by healthcare providers, and reducing a sensation of claustrophobia experienced by some patients when wearing an oxygen mask.