Razer Sphex v2 (mine is a mini version) (yes i know it's a brick). i think it's a pretty good mousepad and from what i have heard it fits the desciption of
Thinnest Hard Gaming Mouse Mat – Razer Sphex V3
Amazon.com: Razer Sphex V2 Mini Gaming Mouse Pad: Ultra-Thin Form Factor - Optimized Gaming Surface - Polycarbonate Finish : Video Games
Razer Sphex V2 Gaming Mouse Mat - Medium - Micro Center
RAZER Sphex v2 Mouse Mat Review - YouTube
Razer Sphex V2 Gaming Mouse Mat - Ultra-Thin Form Factor - Regular 739862410886 | eBay
AliExpress
RZ02-01940100-R3U1 Sphex V2 Gaming Mouse Mat - Newegg.com
Amazon.com: Razer Sphex V2 Gaming Mouse Pad: Ultra-Thin Form Factor - Optimized Gaming Surface - Polycarbonate Finish : Video Games
Amazon.com: Razer Sphex V2 Ultra-Thin Form Factor, Optimised Gaming Surface, Polycarbonate Finish, Gaming Mouse Mat : Electronics