Big Ben Plus. The robust 3 mm GreenGuard puncture protection and the reinforced sidewall make the rugged Balloonbike tire Big Ben Plus a true workhorse. ECE-R75 certified, comfortable, and resilient. The perfect choice for cargo bikes and e-bikes of all kinds. Built-in air suspension. The Big Ben Plus offers comfortable cycling without complicated technology! The air cushion of the tires is used as a natural suspension. At approximately 2 Bar, a Balloonbike rolls beautifully lightly and with full suspension effect. A normal tire with a width of 37 mm must be inflated to 4 Bar to roll similarly well. Top Features: - Built-in air suspension - Comfortable cycling without elaborate technology - Rugged tread - 3 mm GreenGuard puncture protection - Approved according to ECE-R75 Delivery includes: - 1 x Schwalbe Big Ben Plus wire tire