The environmentally sound Donna. òOur most environmentally conscious sidewalk surfer to date. Upper made of Mighty Hemp, òMighty hemp is Sustainable, Biodegradable & vegan friendly òSustainable because: Hemp requires little to no pesticides, replenishes soil with nutrients and nitrogen, controls erosion of the topsoil, and converts CO2 to oxygen very well, considering how fast it grows òBiodegradable because: Hemp is a plant and as such itÆs organic & overtime it will disintegrate. òVegan friendly because: no animals were harmed in the making of this sidewalk surfer