Our Masks are all 3 layer with a spun bond filter in the middle; an outer fabric and an inner lining. They are fully reversible and breathable. Fabrics are mostly natural: cottons, rayons and some poly cotton. Full descriptions in the product info. Sizes in the range are: Mens; Ladies ; Teens ; Tweens. 8 – 12yrs; Kids 3 – 7 yrs. It’s really dependent on the width of your face; many Teen sized Masks and Buffs are sold to Ladies with narrower faces. Some Teens (esp. males). may also wear the Ladies / Adult size. Plain navy and black masks are sold as School Masks and have been very popular. Soft knit Masks wrap around your face and are very comfortable – Ladies & Teens only. Buffs are in 2 sizes: Adult 35cm x 23cm or Kids 27cm x 20cm in soft viscose lycra.