Actually, size is everything! And you get to decide how to use it: Short - as an all-year-round shock guardLong - for full-length protection, when it gets mudtasticEach MugGuard is made in the UK using 100% recycled plastic and comes with re-useable VELCRO® fasteners, so you can attach it to your pride and joy with ease.In short mode, it works mighty fine as an all-year-round guard, protecting your rear shock and magnificent calves against splatter and matter, thrown by the back wheel.And when the weather turns to sh**, simply whip out and attach the extension for full-length protection.Full sus or hardtail, the MugGuard works impeccably on both. And is compatible with 26" to 29" wheel diameters and tyres up to 3" wide... possibly a tad more.Using its innovative dial feature, tune the guard's angle to achieve the desired clearance with your rear tyre. Each arm has a rubber base, for maximum grip on your seat stays and to protect your bike's precious paintwork. We are always looking for