Do you have unruly shirt cuffs? Do you like mathematical constants? Well do we have an irrational solution for you! These snazzy pi cufflinks will help you calculate the circumference of your wrists given their diameter, and look stylish while doing it.

Polished electroplated copper cufflinks, 15mm by 16mm. Supplied in a matt black presentation box. 2 cufflinks supplied (so the total is τ).

Price = p₁₂₅ pence = £6.91