We have revamped our very popular "Magnums" and now produce them for you in an easy to wear version.
These come with a set of 4 digits 0-9 so is a number for life!
Supplied in a sleeve these are worn around your waist with fine elastic .
The elastic is toggled so one size will fit all (supplied) 
Rounded as thats what we all like

waterproof, comfortable and easy to change the digits without removing the sleeve just slide the numbers down and the little magnets will grip .