Apple Watch Leather Loop

You have since edited your question to add "in terms of getting Apple to provide the warranty on the leather loop?".

The Limited Warranty period on Apple Watch can vary by country, but is typically one year. In the US, for example, the terms are detailed here:

Apple One (1) Year Limited Warranty

If the warranty period in your country is one year and you purchased your Apple Watch in December 2015, then the warranty no longer applies.

Given that Apple has also already advised you of its decision, I suggest that you proceed with purchasing a replacement band, as suggested in my previous reply.

Apple's Limited Warranty is not necessarily two years as a result of you being in the EU.

In the UK, for example (currently still part of the EU), Apple's Limited Warranty is one year.

More information:

Legal - Hardware Warranties - Apple

Apple's warranty does not cover normal wear and tear and, whether your band is still covered under warranty or not, I'm afraid that no-one here can intervene in your support case or change Apple's decision.

If you believe that the wear and tear is unreasonable, then, depending on the country of purchase, you may wish to consider instead making a claim under consumer law:

Apple Products and Consumer Law Rights

Hi

I suggest that you consider buying a replacement band in order to avoid your Apple Watch becoming damaged as a result of further wear and tear to your present band:

Buy Apple Watch Bands - Apple