SBR blended NR upper with cotton canvas lining|Highly chemical resistant rubber upper|Oil-, chemical-, abrasion-, heat-, slip-resistant, and air cushioned NBR lug sole|30% concentration Sodium Cyanide resistant >480 minutes|Achilles tendon and ankle protection|Compatitble with ice studs|Ultra flexible: Exceeds 305,000 Flex Rating|Hang holes on the sides of the boots|14" Tall