Viscose fibre is a plant-based, plastic-free and sustainably sourced material that is certified compostable according to European Standards EN13432 and certified by TÜV Austria as OK compost Home.**Test method ASTM D5511.This fibre can be taken from a variety of trees but the predominant ones are beech, fir, acer, spruce and ash. The flushable wipes are made from pulp and tencel. Tencel is made from sustainably sourced plant material and it is also biodegradable.