How do i replace Razer Kraken Pro V2 Headband ???

How do I replace the damaged or worn-out headband on my Razer Kraken Pro V2? I've bought a replacement headband for the headset online, but not from razer(because razer don't even sell it) and I want to know how can I replace it? I am very disappointed that razer sells products that worn-out easily. My keyboard's wrist rest also worn-out easily.