DREAM PAIRSWomen's Sole_Stretchy White/PU Elastic Ankle Straps Ballet Flats Shoes Size

I'm usually size 5.5 UK but the chart thinks i should fit into a 6.5? The biggest size I've worn is a size 6.

Is the back hard or soft ? I have weird shaped heels and can only tolerate soft-backed shoes. Thanks

Sent wrong size how do i send them back

Sizing - your instructions suggest i get uk 8.5 if i order 8 but you don't have 8.5. which is a european 42?