FiberSkyn is the trademarked name of a synthetic plastic material in sheet form that is used in the manufacturing of drum heads by an American company called Remo

Remo

Remo is a male given name of Latin origin - see Romulus and Remus.Remo may also refer to:* Remo, an American drum skin company* Remo , another name for the German wine grape Riesling* Remo language, a Panoan language of Brazil and Peru...

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Fiberskyn consists of two layers glued together, PET film

PET film (biaxially oriented)

BoPET is a polyester film made from stretched polyethylene terephthalate and is used for its high tensile strength, chemical and dimensional stability, transparency, reflectivity, gas and aroma barrier properties and electrical insulation.A variety of companies manufacture boPET and other...

 and Tyvek

Tyvek

Tyvek is a brand of flashspun high-density polyethylene fibers, a synthetic material; the name is a registered trademark of DuPont. The material is very strong; it is difficult to tear but can easily be cut with scissors or a knife...

. The Mylar provides strength, while the Tyvek adds thickness, a less synthetic sound, and an appearance reminiscent of animal skin.