Schwalbe Marathon Green GreenGuard 27" TireThe Schwalbe Green Marathon is a pioneering touring tire that balances high performance puncture protection with industry leading sustainability. Built with 70% recycled or renewable materials, it is the first tire to utilize carbon black recovered from recycled bicycle tires. This eco friendly construction is produced entirely from Fair Rubber, making it an ideal choice for environmentally conscious riders. For reliability, the tire features a 3mm