
Bought a medium size for my shoulder length hair. Haven't used them yet but was surprised at how small the "medium" size is. I have included a one penny size chart for reference. The average size really isn't much bigger than the small one. For big, voluminous curls, you should probably use X-Jumbo. In addition to these I have ordered both XL and X-Jumbo and plan to use the large ones on top and the small ones on my shorter hair near the nape of the neck.

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