The Schwalbe Marathon Original is the granddaddy of all high-performance touring tires. With a 3mm GreenGuard layer made of highly elastic natural rubber, this tire offers excellent puncture protection. The GreenGuard layer also contains recycled latex products, making it an environmentally friendly choice. The Anti-Aging sidewall ensures that the tire is resistant to overload and prevents cracking, even when underinflated. The Schwalbe Marathon Original has a 26 x 1 3/8 inch size and an ETRTO size of 37-590. This tire is specifically designed for e-bikes with a speed of up to 25 km/h. It is a clincher tire with reflective elements for added visibility and safety. The tire is black and made of rubber. At 700 grams, this tire is lightweight and provides a smooth ride. The recommended tire pressure ranges from 4.00 to 6.00 bar (55 - 85 psi). The EPI (Ends Per Inch) of this tire is 67. Specifications: - Inch size: 26 x 1 3/8 - ETRTO size: 37-590 - Bicycle type: e-bike (up to 25 km/h) - Tire type: clincher - Reflection: yes - Color: black - Material: rubber - Weight: 700 grams - Tire pressure: 4.00 - 6.00 Bar (55 - 85 psi) - EPI: 67 - Product type: HS420