INDESTRUCTIBLE

adj. durable, long-lasting, everlasting, eternal, endless, perennial, permanent, fixed, unchanging, changeless, unchangeable, indelible, ineradicable, inextirpable, immutable, unalterable, constant, undying, non-perishable, imperishable; unbreakable, non-breakable, shatter-proof The problem is that many plastics are virtually indestructible