Schwalbe - Marathon KR 16 x 1-3/8 (35-349) Brompton

The Schwalbe Marathon is constructed with a highly elastic, 3mm thick 'GreenGuard', partially made up of recycled latex products. This provides a very high level of puncture protection for average use, as well as very high durability. 

Further, the “Anti-Aging” sidewall can withstand the typical cracking that results from overloading due to insufficient inflation pressure for much longer.