The Mac3 tyre from KHE is contructed from two separate, specially developed Kevlar layers (instead of a traditional cotton carcas) which allows for a particular lightweight and stable tyre which can still hold 100psi. The tyre comes in a 2.4" width and is favoured amongst park and street riders as it reduces the rotational weight of your ride making spinning tricks easier. ###section### Product Specs WHEEL SIZE: 20" MAX PRESSURE: 100 PSI PACK SIZE: Single WEIGHT: 690g Size: 2.4"