This product was mentioned in
with an average of
Nillkin nature cases
Google Pixel XL Case, Nillkin Nature Series Clear Soft TPU Case Back Cover [Ultra Thin] [Slim Fit] for Google Pixel XL - Clear [link]
Also for everyone in here saying get a maxboost, get a tranium instead same case but cheaper.
The Nillikin nature is what you're looking for, I think.