Actually, size is everything! And you get to decide how to use it:
Short - as an all-year-round shock guard
Long - for full-length protection, when it gets mudtastic
Each 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.