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How to heat mould your Archies:

Archies Flip Flops are made from a highly specialised form of thermoplastic foam and when heated, the material will become soft and mouldable. The following technique can be used to heat mould your Archies Flip Flops.

As this involves boiling water, please take EXTREME CARE not to burn yourself. Do NOT touch the flip flop with any part of your skin while it is still hot!


  1. Boil a kettle.
  2. Put the flip-flops in the kitchen sink with the arch facing down.
  3. Once the kettle is boiled, pour boiling water over the flip flops, making sure the arch remains covered by the water. 
  4. Keep in the boiling water for 1 minute (do NOT keep in longer than 1 minute as this will can cause the thongs to shrink).
  5. Take out and pat dry (of course being extremely careful not to burn yourself with the hot water or flip flop that will be hot!).
  6. Quickly pat dry the flip flops making sure ALL the hot water is gone and dried up.
  7. Once you have confirmed that the flip flops are not too hot to cause a burn, stand on the flip flops in bare feet (not wearing socks as this will stretch the strap excessively) trying to put all of your body weight into the flip flops, particularly trying to squash down the areas where the arch feels too high.
  8. It's often good to transfer weight from one leg to the other so that most of your body weight goes through the flip flop for a period, trying to squash down the areas that are causing you discomfort.
  9. Do this for about 3-4 minutes.
  10. You can repeat this as many times as necessary until the flip flops have moulded perfectly to the foot shape.  

This will heat mould to the shape of your feet, giving you a customised fit.

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Guide des pointures

Archies Flip Flop sizing runs very true to your normal running shoe size, we suggest selecting that for your size.

If your size is not listed in the size chart, we suggest you follow the tips below. This will still enable you to get a really good fit!

If you have a narrow or normal foot - Size down.
Eg - You are a size EU 38, it is not listed in our chart. There is a choice between 37 - 37.5 or 38.5 - 39. Choose 37 - 37.5. 

If you have a wide foot - Size up.
Eg - You are a size EU 38, it is not listed in our chart. There is a choice between 37 - 37.5 or 38.5 - 39. Choose 38.5 - 39.

*Note; if unsure if you have a narrow or wide foot, you will likely have a normal foot width. Most people with a narrow or wide foot type know this as they have had to buy shoes to cater for this their whole life.

Women’s Size Conversion Chart

Men's Size Conversion Chart


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