Bamboo is an endless resource because it is so plentiful.Organic cotton/linen, printed wool, and wool felt uppers , Bamboo linings, Molded latex outsole Rubbahyde rand, Unfinished brass hardware Jute laces, Removable natural latex pedbed with a cotton canvas cover,Natural crepe rubber midsole Slight crepe wedge, Uses water based cements 100% post consumer paper pulp foot forms.