The leather is tumbled in a large drum to produce softer more pliable leather and this process can create a slight "pebble" appearance in the surface of the leather.
Unlike a lot of the deceptive advertising leather terms, hair on leather is exactly what it sounds like. It is leather that has hair on it. Specifically it is leather that still has the original hair on it, making it look like it came straight off the cow! It really lets you see the cows natural colors and markings.
Modern pull up leather is an oil and wax-rich leather that, changes colour slightly due to to its oils and waxes being mobilised when it is pulled up, flexed or scratched. (It's also referred to as 'pull up effect.
Vegetable tanned leather refers to the tannage, or method of tanning the cowhide into leather. It's called “vegetable” because of the natural materials used in the tanning process like tree bark. Vegetable tanning or veg tan as it's sometimes called, is one of the oldest methods of tanning known to man.
Suede Leather can be manufactured from cow hide, goat skin and buffalo hide. This leather is finished on the flesh side and has a velvety nap. Shoe Upper, shoe lining, garment and other fancy products are manufactured from this leather.