SKS's P35 mudguards are made from a plastic and foil sandwich called Cromoplastic which is virtually indestructible.
They’re available in a standard narrow width or a broader version to ﬁt around touring tyres. Our test models were easy to fit and once everything was tightened they didn't catch or rub at all.
The P35s feature Secu-Clip, a safety measure that lets the stays release from their ﬁxing if something gets stuck between the tyre and mudguard. The ﬁttings and stays are stainless steel.