Big Ben Plus. The robust 3 mm GreenGuard puncture protection and the reinforced sidewall make the sturdy Balloonbike tire Big Ben Plus a true workhorse. ECE-R75 certified, comfortable, and durable. The perfect choice for cargo bikes and all types of e-bikes. Built-in air suspension. The Big Ben Plus offers comfortable cycling without complex technology! The tire's air cushion is utilized as natural suspension. At around 2 Bar, a Balloonbike rolls wonderfully lightly with full suspension effect. A standard tire with a width of 37 mm must be inflated to a solid 4 Bar to roll similarly well. Top Features: - Built-in air suspension - Comfortable cycling without complicated technology - Sturdy tread pattern - 3 mm GreenGuard puncture protection - Approved according to ECE-R75 Scope of delivery: - 1 x Schwalbe Big Ben Plus wire tire