1) The 4 sides stretch Patent PU synthetic leather is great and perfect for the Boot Shoes, especially for the long boots.  The stretch effects is great. The boot can fit your legs perfectly and no any constraint when you walking. 

2. The materials is water solvent-free, it's eco-friendly pu mateirals with softness handfeeling. 
3) This patent PU synthetic leather is wear-resistance and scratch proof. It's shining and high class. 

4) The price is resonable. 

5) The color can be custmized according to your request. For the thicknss, it's 0.8mm, you can also make it 0.6mm accroding to your needing. The more thinner, the more strech effects.