Leather: A Timeless Artifact

Home Aloha News Leather: A Timeless Artifact

Worn for centuries, leather seems to be one of those rare, timeless products that will never go out of style. From leather shoes to priceless leather bags, to the interior of luxury vehicles, we can’t seem to get enough leather, and we can’t seem to have ever gotten enough.

When we say leather is timeless, we mean this almost literally---the earliest finding of leather goods dates back to 1300 B.C. Sometimes hides were greased and smoked, according to Britannica.com, but one way or another ancient civilizations found ways to preserve animal hides for further uses as clothing and other artifacts.

Ancient Greeks, Romans, and Egyptians are all recorded as having fashioned leather sandals and armor for themselves. Eventually, by the middle ages, leather tanners and craftsmen began to trade leather goods on a somewhat larger scale. Soon leather carved its way into the bookbinding industry, as many books were covered and bound by the tough and durable material.

The reputation for excellence that leather has built over the centuries continues today, and people are willing to put down big bucks for genuine leather products.

Gone are the days of small tanning operations. Today, tanneries operate on a large scale. Generally, a tanning factory will buy hides that are delivered without the hair of the animal and dried out (cured to remove the moisture) for preservation. The skins are sorted according to the type of leather they will make.

The most efficient tanning method was developed in the 19th century and is called “chrome tanning.” Chrome ions dispel the water that is left over in the hide and bonds to collagens. The whole process can take less than a day. Once tanned this way, the hide is heat-resistant and water-resistant.

The other tanning method is called “vegetable tanning.” In this method, a natural chemical found in plants called “tannins” is used to bind the collagens in the hide similarly to the chrome tanning method. This binding process causes the leather to become water-resistant and flexible. The hides are stretched and immersed for weeks in a tannin solution. Still, vegetable-tanned leather is usually not as soft as chrome-tanned leather, so this is the leather used mostly for accessories like belts and luggage.

While most leather is made from cowhide, it can also be made using the hides of sheep, goats, pigs, horses, kangaroos, ostriches, deer, and elk, though these make up the vast minority of leathers. Reptilian skins are also used in the fashion industry, such as those of snakes, alligators and crocodiles.

While leather is a notoriously long-lasting and tough material, there are rules of thumb when it comes to leather. For instance, long exposure in high-humidity areas without proper care like polishing can cause certain leathers to discolor or even to disintegrate. Exposure to certain chemicals can also have detrimental effects on leather products. However, as long as your leather items are kept in your house or in some other neutral, dry place when not in use, they should be a statement piece that can be used for years to come.

You can buy slippahs made from genuine leather at AlohaShoes.com: some examples are the Kakina, Nokea, and Hana models.

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What is Polyurethane Leather? Benefits of PU Made Sandals

You’re looking for a shoe that is smooth and durable, and feels great on your feet. Perhaps a shoe coated in Polyurethane, abbreviated as PU, is for you. But what exactly is PU?

Polyurethane is a polymer, or synthetic resin. PU is desirable because of its strength, durability, water resistance, and because it generally dries as a transparent, taking on whatever color it is dipped in or whatever it’s brushed on. It also tends to be scratch-resistant.

But, you may be wondering, what does this varnishing material have to do with shoes?

PU is most commonly connected in the shoe world to PU leather. PU leather is split leather, or an animal hide that has been split into thinner sheets than top-grain leather is, and then dipped into the PU resin to create a thicker, water-resistant, and more durable material. This PU leather is what is generally seen on shoes, although regular PU may be brushed onto a rubber or EVA surface to make it tougher, or PU may be molded into plastic sheets to be used on the outsoles of shoes, especially running shoes and sandals.

Although PU leather generally has a hide base, it is categorized as a synthetic because it has been altered by the polyurethane. Some PU leathers, called vegan leathers, do not have any animal hide products at all, but instead are made of fabric brushed with polyurethane made to look like genuine leather.

There are some definite upsides that PU leathers have that top-grain leathers do not. First of all is the cost. Genuine top-grain animal-hide leather can be prohibitively expensive because of the amount of labor and time it takes to complete the finished product. Using PU leather maintains the look and feel of leather while keeping costs down.

Secondly, because of the PU varnish, polyurethane leather is more waterproof than top-grain leather, which is perfect for sandals, flip flops, slides, or other shoes that might be brought on adventures that involve water.

It’s also lighter than genuine leather. Think of a 100% leather boot. It’s usually tough and very heavy. For a sportier shoe, there’s a great advantage to having PU leather, and that’s the weight (or rather, lack thereof). PU leather is very light, so when a sandal or other shoe is made with PU leather, it’ll be easier to walk in, travel with, and hop into when you need to get moving quickly.

PU leather looks and feels great on shoes, but many other products take advantage of PU leather. For example, wallets and purses often use PU leather, as do office chairs and other office supplies, backpacks, journal covers, and low-cost car interiors.

Still, PU leather arguably looks and feels best on footwear, as it is one of the only products in which the PU leather, which feels like top-grain leather, comes into contact with your skin. PU leather takes the stress off, because you can rest assured that you didn’t have to pay an exorbitant amount for it, and because you can clean it with water---something that simply isn’t an option for top-grain hide. Because it is water-safe, you can take the caution you’d normally have to take with leather and throw it to the wind. Want to head to the beach with your PU leather sandals? Go for it! The polyurethane can take it.

Make sure to check out the sandals available with PU leather options on AlohaShoes.com to get a sense of what PU leather looks like on sandals and slippers. Chances are you won’t be disappointed, and the price point for these products can’t be beat.

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