They are ‘Springolators’ so they have an elastic part in the insole which helps to keep them on
They do not have a UK size in them but having checked the measurements online they are likely a size 5
Insole width: 8 cm
Inner length: 24.5 cm
If you have any questions please don’t hesitate to ask
I always combine postage but you will need to buy the items at the same time and pay for them together