Set of twenty-five microscopes slides demonstrating a wide variety of natural and synthetic fibres and materials.Contains the following:Angora woolCamel-hairMerino woolMohairEuropean woolAustralian woolCocoon silk rawOrgansin silkTussah silkEgyptian cottonMercerised cottonLinen (flax)JuteItalian hempRamieCelluloseCuprama rayonCasein fibrePVC fibreAcetate rayonViscose rayonBemberg rayonPerlonGauzeNylon fabricThe product image shows cotton fibre.