Marathon 28" 37-622 Reflex Green Guard The archetypal high quality touring tire. The highly elastic GreenGuard layer is 3 mm thick. One third of the GreenGuard is made up of recycled latex products. The “Anti-Aging” sidewall can withstand the typical cracking that results from overloading due to insufficient inflation pressure for much longer. Product features Size: ETRTO 37-622 (28 x 1.40 Inch) Typ: Wired Compound: Endurance Execution: GreenGuard Skin: Twin Pressure: 4.00 - 6.00 Bar (55 - 85 psi) Maximum load: 95 kg EPI: 67 ECE: Yes Profil: HS420 Tube: 17, 18 Color Black-Reflex Weight 730 g (26 oz) Level 5 GreenGuard Same principle as the SmartGuard, but only about 3 mm thick. One-third of the highly elastic India rubber is made up of recycled latex products. Recycling Old products made of natural rubber (such as gloves, tubes...) are crumbed and, over several procedural steps, used as base material in the puncture protection system. Ebike ready 50 What should you look out for with faster E-bikes? Special tires are necessary for fast E-bikes. The best solution is tires with ECE-R75 certification, valid throughout Europe. All our Energizer tires bear the mark and are valid on vehicles up to 50 km/h.