Here is what OP likely got. This is the only one I've ever seen on Amazon. I ordered one - unfortunately mine was garbage. The inner corners around buttons and d-pad would flip up while playing (best way I can describe it). They should just cut circles around both.

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Silicone Cover Skin Case Protector Case Thumb Grips for Stadia Controller (Bl... https://www.amazon.com/dp/B08DTMC7F5/ref=cm_sw_r_tw_dp_W883HEWEZPY4MQ768AX1?_encoding=UTF8&psc=1