RZilla - English Walnut Shells Ground 25 qt Creates a natural and attractive desert environment Excellent heat conductor Stimulates natural digging and burrowing behaviorAdvantages that leave sand in the dust!Recreate a reptile"s desert habitat with attractive, 100% natural ground English walnut shell It"s lighter in weight than old fashioned sand, and dust free for a healthier home environment Won"t scratch cage glass This material is made in the USA, and can be readily composted with everyday yard waste25 qt5.00 in L x 19.75 in W x 23.25 in H