genuine leather is better. polyurethane leather (or PU) is not real leather.
Yes
PU Leather does not breath as the layer of synthetic polyurethane does not allow moisture to move through it. The reason leather can stay in good condition through wear and wetness is it can rid itself of moisture. The polyurethane layer cover also does not age or wear. The thin layer of leather used un the polyurethane was normally a useless thin layer of leather before it was used as the under layer in PU leather.
Why does leather age? Leatheris an organic material
Full grain leather is the highest quality leather that you can get and is made from a single piece of cowhide that has not been sanded or split. However polyurethane leather, also called "bicast" leather is made from low grade leather split leather, up to 4 pieces of low grade leather may be split from one single cow hide. It is often much thinner and less durable than real leather because it is has been split and then coated with polyurethane(plastic) on top and often stamped with a leather-like grain. True leather will last a lot longer than bicast leather. Real leather will become softer and develope a patina over time whereas the polyurethane coating on bicast leather may split or peel after just a few years.
Renu leather fabric is a composite of polyurethane, leather, and polyester. It is a breathable and durable fabric that is comfortable to sit on.
Renu leather is made from a combination of leather and other materials like polyurethane and polyester. It is supposed to be a more affordable leather alternative that looks like top-grain leather.
No. But it burns like hell. Watch Discovery a bit.
Polyurethane will give a long lasting easy to apply finish. Use a water based polyurethane ans clean up will be much easier. You should get years of wear from a good polyurethane finish.
Leather-finish polyurethane covered beds are available from various locations for around $250. Beds covered with real leather are much more expensive - most prices are around $1000.
No, the iPad 2 doesn't come with any protection for the front or back of the device. The Smart Cover has to be bought separately from Apple. It comes in ten different colours. You can but it in two different materials, polyurethane and leather. The polyurethane will run you £35 and the leather £60.
black leather
yes, they are the main substance for wheels today
Kangaroo leather is said to be better. It lasts longer, is softer and more flexible.