Help with picking the correct tubes

[SnowWhite]

Hello, would anyone here be able to advise me as to what the correct set of tubes is for my bike and where I can buy it. Every set of tubes I see has multiple measurements which I just can't get my head around! I'm after buying a second set of what I thought were THE tubes but again turns out they don't fit. I would very much appreciate any suggestions as to what tubes I need and where to buy them. I'm attaching 2 pics: one of the tyre and one of the old tube. Thank you!

 

[weareHKR]

Pick an innertube that says 700 x [Width range], where the width range includes 28.
For example, a tube that says - 700 x 23 -32c will be perfect for your bike.
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[Paulus]

Agree with the above.
700c with the range of widths.
You are running 28mm tyres at the moment so any tube stating 28 on the sizing.

 

[vickster]

Might be easier to fit the ones where 28 is at the top of the range, than the bottom, eg 20-28