Our masks all have an outer shell, Polypropylene inner filter, and high density 100% cotton lining. The elastics go around the head, for a more secure fit, but are easily adapted to be worn behind the ears. For a fitted mask with elastics that go behind the ears please leave a note when checking out. Your mask must fit snugly around your face. Any gaps that allow the wearer to breath around, rather than through, the mask can make them up to 90% ineffective. Available in three sizes: Large ~ best for menMedium ~ most common size for women and older childrenSmall ~ Children under 10 Use promo code :MASK for free shipping in Canada with no tracking If you wish for expedited shipping at our regular rate ($13 Can and $15 USA) with tracking it will be applied automatically when you place your order if you do not use the code. Outer cover: 65/35% Poly/viscoseInner liner: PolypropyleneBacking: High density 100% cotton
