What Do The Gel Bracklets Mean Where Can I Buy Men's Asics Gel Sensei 3 Trainers In The UK Or In The US And Get Them Shipped To The UK?

Where can I buy Men's Asics Gel Sensei 3 trainers in the UK or in the US and get them shipped to the UK? - what do the gel bracklets mean

It seems that these teachers are available in the United Kingdom and 3 or 4 U.S. stores will be contacted, I will not be delivered to the UK. I have no idea why? Please can someone help me find a store anywhere in the United Kingdom? Thanks