Batter, Fiberskyn, Fa Film, 18" Diameter. The Fiberskyn® 3 Ambassadors® are medium-weight heads made with a poly-spun fiber single ply 10 mil Mylar® film to produce a warm mid range resonant sound with a warm attack. The Fiberskyn 3 Ambassador surface is excellent for sticks, brushes. F3 Ambassador heads produce a warm spectrum of sound for snares and tom-toms. They are best known for Jazz and Orchestral applications.