Vince gray casual slip on sneakers flats

Vince gray casual slip on sneakers I think it is leather but not 100% sure, no tag to confirm. Used but very comfortable. The darker color inside the shoe is not dirt but scratched off sole, I made it worse by trying to remove what I thought was dirt! From a clean, non-smoking home. 🌿 reusing boxes to be more eco-friendly 🌿