(I leave the entire original review below and add a very important disadvantage)

After 1.5 years of use, the LED around the edge starts to "fade" and about 60% of the LED strip is no longer bright.
Everything else is the same, I still scrub it with a hard brush and my cats still walk on it and sometimes make a little "scratch scratch" with their claws but nothing has happened to it, it is still "brand new" when I clean it.

It loses another star for its RGB problem.

(The original review)
Material

• The material is good and the mouse glides nicely on it
• It doesn't rub your hand as you move it, which some other mouse pads do
• Things in general don't slide on it, like the keyboard, so it sits firmly on top and doesn't get pushed around during use.
• Not great for Cat Owners, my cat sometimes tries to curl up on it and yes, it might pull out some small threads but I should note that it's not very intense, so overall it's quite durable.

RGB

• It's not the strongest RGB I've seen and like most RGB mousepads, here too the light diminishes slightly the further it gets from its adapter but it still remains quite good.
• As for the price, for just a little more you can get the XXL, so the XL is almost the same price as the Corsair equivalent but is simply 1000 times more desirable. Before I bought this, I had bought the Corsair and the RGB up to the opposite corner from the adapter was 99% off, no exaggeration. So I don't know if there's a better one for the money that competes with it. I ended up returning the Corsair and buying this one.

Software

• Based on experience, I'll say this in general. It may seem quite good and functional for someone who hasn't used a lot of peripheral software, but for me it's not good enough and I don't like the RGB mode settings. It could be better and have some basic modes, like having a background color and another color moving cyclically on the mousepad, but that's not available. The software is purely for Razer mice and keyboards but it's not uniformly compatible with the Goliathus.
• The colors you can set with the software are a fail. For example, I'll set orange and it looks red, you'll set purple and it looks blue, you'll set blue and it's light blue. You can get exactly the color you want but the color palette doesn't help at all and you have to try a few times to get it right. I don't have any other Razer peripherals to compare if this fail is only on the mousepad so I can't say more.

Size ─

• The size, guys, is really huge. It's best to measure your desk exactly before buying because it's very easy to end up needing to exchange it. For me personally, it fits exactly on my desk (my desk is bigger than the mousepad but it has a gap for cables and continues further back, but up to the gap it fits exactly) so it suits me perfectly and really gives a full premium look to my setup. If you use it with the right peripherals it will simply look beautiful, but if you get a mini keyboard without a numpad and don't have a second monitor, for example, then it will stick out much more than the peripherals and might not look as nice.

Cleanliness

• ALL RGB keyboards have an issue with cleanliness and there is also a risk that the RGB might get damaged, so you have to clean it manually. At first, I cleaned it with wet wipes. Then I cleaned it with a soft sponge and a little detergent. Now, without fear, I use a hard brush, dip it a little in water with just a tiny bit of detergent because you can't rinse it, and scrub it without mercy. With the brush, it has gotten rid of years of grime without damaging the RGB, and the material has only slightly worn, almost unnoticeable (and I'm talking about a good scrubbing).

Final Rating ★★★★☆

A year and a half of use, with a cat, and brushing with a hard brush.

For me, it's perfect and has suited me just the way I really want, it's just the software that takes away a star and a bit the size, because I can't judge if it's suitable or not, everyone has their own tastes and a different desk.

A mouse mat that will cover almost the entire desk. Durable, doesn't slip from its position, and the mouse glides smoothly. Classic, very nice RGB lighting, as Razer has accustomed us to, which is also fully adjustable through Razer Synapse (colors, modes, brightness, etc). What worried me was its cable, which fortunately is long and of good quality (I think it's at least 1.5 meters if I'm not mistaken). However, something I overlooked before purchasing it... how to clean it, something I currently do by rubbing it with a damp cloth as much as I can (without soap and without putting it under running water, due to the lighting it has). Is it worth its money (I bought it for about 115 euros)? No, it's clearly for Razer fans and you will definitely find similar mouse mats at half the price (if not lower), hence the given rating.