iOS iPhone App Hamburger Menu Button Size [migrated]

I've decided to add a Hamburger Menu on my new iOS iPhone Application. So in order to successfully implement that I need to prepare few images specially for the Hamburger button.

But I couldn't find specific sizes which are suitable for this. Can anybody guide me? Currently I have designed following images:

I created images in following sizes:

  1. 44px - @1x.png enter image description here
  2. 44px - @2x.png enter image description here
  3. 66px - @3x.png enter image description here

Please help me! I hope I have asked this question in the right place.

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