You are looking at an 'as new' Pitaka Aramid Fibre minimalist case for an iPhone 11 Pro Max.
This particular case is a rather special twill weave called micro fibre, in striking yellow and black. It is uncannily similar to reptile skin, smooth to the touch.
This has been opened, but never used, it has only been used in a marketing campaign photo shoot, hence the condition as like new.
This is made from Aramid Fibre, which is used in similar situations as carbon fibre, it has the same look, feel and characteristics as carbon fibre, but importantly, it does not impact on the signal, unlike carbon fibre which can significantly reduce cell signal.
To find out more, check out the Pitaka website: https://global.ipitaka.com
These normally retail for £45+ depending on the particular finish.