Air suspension built-in. The Big Apple started off the Balloonbike trend ten years ago: Comfortable cycling without using complicated technology! Air cushion tires are used as natural suspension. Inflated to around 2 Bar a Balloonbike rolls really easily and with a full suspension effect. A normal tire with a width of 37 mm must be inflated to a rock-hard 4 bar, in order to roll similarly well.BIG APPLE PLUS. Now enjoy Balloonbike comfort with extra safe 3 mm GreenGuard puncture protection.Features:- Compound: Endurance- The new Marathon compound for the highest durability.- Execution: RaceGuard®- This belt was developed specially with racing in mind. A synthesis of special india rubber and several layers of nylon fabric offers very effective protection against penetration punctures. There is only a minimal increase in weight and rolling resistance of these tires. , Performance Line- Excellent quality for intensive use.- Carcass: Black with reflective lines- Skin: Lite Skin- Skin describes the sidewall- Lite: Light and thin. Consists only of the rubberized casing.- Twin: An additional rubber coating on the side protects against cuts and allows for uniform colouring.Specifications:- Snake: Very light and effective protection using SnakeSkin fabric.- Weight: 495 g (17 oz)- Pressure: 35-70 psi (2,5-5,0 Bar)- Maximum load: 85- Tread: HS 430- EPI: 67