Leather Properties & Uses
Leather Properties: How Leather Behaves and What That Means When You Buy
How leather behaves: water vapour, water uptake, stretch, smell and warmth, with sources, what each means when you buy, and the guide for each question.
Leather is animal hide that has been tanned so it does not decay, and it stays strong and flexible. Most of what you notice when you own it comes from that structure and from how it was tanned and finished. It takes up and passes water vapour. It gives a little where it flexes, and it carries a smell from its processing.
This hub sums up each property in plain terms and links to the page that answers each question in full.
Leather properties at a glance
| Property | What the sources say | What it means when you buy | Read more |
|---|---|---|---|
| Breathability | Leather absorbs, stores and passes water vapour | Heavy coatings reduce it | Is leather breathable? |
| Water | Can take up to 25% of its dry weight in water before it feels damp | "Water-resistant" is not "waterproof" | Is leather waterproof? |
| Stretch | Boots give at the sides, not in length, per one boot store | Buy for length; expect some give in width | Can leather stretch? |
| Smell | A mix of dozens of compounds, mostly from processing | A clue, not proof of real leather | What does leather smell like? |
Smell: what leather smells like and what it picks up
Many buyers treat the smell of leather as proof that it is real. Most other materials are expected to smell of nothing. A study by the FILK leather institute traced the smell mainly to fatliquors (softening oils), retanning agents and preservatives.
Leather can also pick up outside smells. Smoke residue, for example, can cling to furniture and clothing and outlast airing and normal cleaning.
- What does leather smell like? covers smell as a buying clue.
- Does leather absorb smells? covers smoke, perfume and secondhand items.
Stretch and shrink: how leather changes shape
Leather gives with wear, but not evenly. One boot store says most stretching happens at the sides and that length does not change. A shoe brand puts the limit at about half a size, almost all of it in width.
Lambskin is described as fine-grained and elastic, which raises its own fit questions. Leather can also shrink: the store's care page warns that normal dry cleaning removes oils and can make leather crack, fade and shrink.
Water, air and warmth
A Bayer AG paper on water vapour permeable leather explains that leather's comfort in shoes comes from moving water vapour. Finishes change that a lot: some coatings and closed waterproofing cut vapour uptake and breathability sharply.
Water resistance is the other side of the same trait. Leather absorbs water, and once it is wet it is hard to dry. Under the FTC Leather Guides, a product should not be called waterproof unless it keeps water out for its expected life under normal use.
Warmth depends on how the item is built as well as on the hide. Sheepskin tanned with its fleece on insulates well.
Softness and choosing leather for the item
Lamb and deerskin are used for soft leather in more expensive clothing. One store describes cowhide as firmer, suiting biker and cafe racer cuts, and sheepskin and lambskin as softer with more drape, suiting shirt and bomber styles.
- The softest types of leather
- Common materials used for jackets and choosing the best leather for a bomber jacket
- How to choose the best leather for belts
If you are choosing a jacket, Leather Collection men's leather jackets names the hide on every product page, so you can match the leather to the feel you want.
Ethics and where leather comes from
Animal welfare and environmental questions get their own page with sources for each claim: leather ethics: animal welfare and environmental considerations.
Questions shoppers ask
What is the definition of leather?
A strong, flexible material made by tanning animal skins and hides so they do not decay. Cattle, sheep, goats, pigs and other animals are common sources.
What is 100% real leather called?
"Genuine leather" is not a grade; it often means heavily processed split leather. The layer of the hide tells you more. See split leather vs genuine leather and our leather identification guides.
What is vegetable tanned leather?
Leather tanned with vegetable tanning agents rather than chrome; it is common in bookbinding, while chrome-tanned leather is more common in clothing, gloves and shoe uppers. Vegetable tanning agents also add phenolic notes to its smell. See is vegetable-tanned leather real leather?.
Related hubs: leather comparisons and leather care and weather.
LeatherGuide Editorial Team
LeatherGuide articles are researched from published sources, cited in the text, and reviewed before publication.