I have been looking around into this, and I am not entirely sure.
The part number in the link from
@little_geoff is
G5122ADE10 with this photo:
View attachment 12966
While, my cargo doesn't have that "curve" (indicated by the red circle):
View attachment 12967
Then I found another part number,
G5122ADE01, from this link:
Trunk liner Niro HEV (Pulse, Pace) - G5122ADE01 Browse the range of accessories for your Kia to suit your individual style. Discover interior, exterior and technology related accessories to make your Kia your own.
accessoires-kia.be
That has this image shown:
View attachment 12968
Which has the same "thumbnail" that has the curve from the other part number,
G5122ADE10.
According to that site,
G5122ADE10 is for EV (full electric).
Trunk liner Niro EV (Must) - Q4122ADE10 Browse the range of accessories for your Kia to suit your individual style. Discover interior, exterior and technology related accessories to make your Kia your own.
accessoires-kia.be
kiapartsdirect.co.uk doesn't specifically mention it's for EV.
So, really, all these KIA sites are confusing. I checked several others and they are the same. Even from KIA.com.