Use the Hat Jack that the pros use. This is the top of the line product.
This Pro Hat Stretcher 4 Way Hat Jack - Wooden is the ultimate tool for the serious hat enthusiast. With a 4-way stretch adjustment mechanism, users can expand their hats from 56cm to 62cm, which covers universal and USA sizes 7 to 7 5/8.
Carefully crafted with solid
4.4
8 ratings
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Works so well! Ive refitted two Akubras and a straw RM Williams hat so far; all easy and still hold shape.
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Belinda · July 23, 2026
Complete disaster! Expanded it to near maximum and it just broke. It was no longer possible to rotate the central screw thing. Completely non functional. Bin.