Inch size = 28×1 1/2
Etrto size = 40-635
French size = 700x38B
There is an extra layer of rubber on the sidewalls to prevent tearing. In addition, the Sensamo Allround has an anti-puncture layer made of material also used for forklift tires. That layer gives good puncture resistance but also provides comfort and suppleness. When you want the very best for general use, the Sensamo Allround is your tire.