100% non-metallic, with protective toecap, midsole and internal metatarsal guard, Magma is highly robust and developed with specialist durability materials including FORCE10® components, a Moisture-tech by Sympatex® waterproof membrane, IMPACT SHIELD™ and BOA® Fit System. Each Rock Fall RF710 Magma BOA High Boot S3 HI WR M HRO SRC Black