1 Bladder -- An infection in the bladder is also called cystitis or a bladder infection. 2  Kidneys -- An infection of one or both kidneys is called pyelonephritis or a kidney infection.  Ureters -- The tubes that take urine from each kidney to the bladder are rarely the only site of infection.
Top 10 facts about the world. Nubuck is a type of leather with a soft, velvety surface and is some of the most expensive leather to purchase. Unlike the less expensive suede, this type of leather is far more durable and is excellent for use on items like furniture because it will last much longer than suede.
Quick Answer. Polyurethane, or PU, coated leather is split hide leather that is bonded and covered with a polyurethane coat, and then embossed with grain patterns to simulate the appearance of top grain leather. PU is also known as bicast leather and split hide leather. Continue Reading.