Description
Not sure which size works for your shirts? This assorted metal collar extender set from Giddy Square takes the guesswork out of it. You get one each of 11mm, 15mm and 19mm silver button heads — try each size to find the best fit for each shirt in your wardrobe.
Each extender adds up to half a size of extra collar room, making it easier to button up after a big meal, during warmer months, or when a shirt has shrunk slightly in the wash. The silver finish suits most formalwear and looks clean under a tie.
How to fit
- Start with the smallest size that fits through your buttonhole
- Loop it over the collar button, then fasten through the normal buttonhole
- Fasten collar and tie as usual
3 sizes in one pack — great for households with different shirts, or if you want the flexibility of a multi-shirt solution.
Larger heads may be visible on open collars — best worn with a tie. Not designed for heavy denim or waistband buttons.












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