The Flat-Less Tire. Schwalbes best selling model. The most puncture resistant pneumatic tire there is. In addition to the superior puncture protection it features many inner values:Rolling Resistance. The patented, 5 mm thick smartguard layer, when compared to all generic products, has a significant advantage in rolling resistance.Recycling. Also in the smartguard, we use a proportion of recycled rubber from old latex products.Anti-agingside wall. It now lasts much longer before developing unsightly cracks when subjected to use with too low air pressure.E-bike ready. Due to its great properties marathon plus is an ideal choice for e-bikes (e-25). The main sizes are approved and tested for e-bikes up to 50 km/h.Key Features: Size: ETRTO 25-622 (28x1.00 Inch) Type: Wired Compound: Addix Version: SmartGuard Color: Black+Reflex Seal: Tube Weight: 595 g Pressure: 6.0-8.0 Bar (85-115 psi) Maximum load: 75 kg EPI: 67 E-Bike: E-25 Profile: HS440