Leather speaks for itself, you just have to know how to listen. Twenty years designing leather pieces taught us one thing: the difference between real lambskin and an imitation is easy to identify. Here’s how.
A leather jacket is an investment that can last you a lifetime, as long as it’s properly cared for.
Lambskin is one of the most sought-after leathers in outerwear and fine leather goods. Supple and dense, it ages by gaining character, the more you wear it, the better it gets.
The market is saturated with sophisticated synthetic leathers and reconstituted hides sold under flattering names like ‘’bonded leather’’ or ‘’PU leather.’’ To an untrained eye, the difference is invisible. It’s only once the jacket is in your hands that the difference becomes obvious.
Why lambskin is different from other leathers
Before learning to recognize it, you need to know what you’re looking for and understand what makes this hide particular.
First, fineness. A full-grain lambskin hide measures between 0.6 and 0.9 mm in thickness. That’s nearly half the thickness of a cowhide. This fineness allows a closer cut and a fluid drape that follows the body.
Next, fiber density. Despite its thinness, lambskin remains a dense leather. The fibers are tight and resistant to stretching. Good leather doesn’t deform over the years. It develops a patina that stays unique to each piece.
Finally, natural grain. Every hide has its own microscopic signature. Think of fingerprints, unique to each person. It’s the same with leather. Lamb grain is fine and irregular; that’s what makes it recognizable to the hand as much as to the eye.
The traits are inseparable. An imitation can simulate one, sometimes two, but never all of them together.
The seven tests to spot real lambskin
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The touch test
The fastest and most reliable test. Place your palm flat on the piece and slide your hand slowly.
Real lambskin is warm to the touch. The surface offers slight resistance, just like human skin. You should feel the grain as a micro-texture under your fingers.
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The flex test
Pinch the leather between your thumb and index finger, then fold it on itself.
Real lambskin folds easily and springs back without leaving marks. When you fold it, fine wrinkles should appear on the surface showing that the grain is compressing. These wrinkles disappear the moment you release the pressure.
An imitation will crack or leave permanent crease lines.
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The smell test
Bring the piece up to your face and breathe in.
Real leather smells like its tanning. Dry, animal and faintly woody. Lambskin specifically has a more subtle smell than cowhide, but it’s always there.
Faux leather smells like plastic, sometimes slightly sweet, sometimes nothing at all. A complete absence of smell is a signal that you’re dealing with synthetic leather. A sharp chemical smell is another signal of either poor tanning or an imitation.
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The grain test
Look closely at the surface in direct light.
On full-grain lambskin, you see a fine irregular grain. Pores are visible but very small, and the texture varies from one centimetre to the next. That’s what’s called a natural grain.
Embossed, corrected or pressed leather will show a regular pattern with identical aligned pores.
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The backside test
Turn the piece over and look at the lining if it’s accessible or examine the interior seams.
Real leather shows a fibrous backside, irregular in tone. On lambskin, this backside is particularly fine and silky.
An imitation shows a woven backside with a regular textile weave glued to a PVC or PU backing. If you see a grid of synthetic fibers on the reverse, it’s faux leather.
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The weight test
A real lambskin jacket has a specific weight. Neither light nor too heavy. The density of the hide can be felt in the hand.
A jacket that is too light for its size is likely faux leather or bonded leather, which contains polymer and fiber and is less dense that skin.
A jacket abnormally heavy may indicate a thick finishing layer applied to mask corrected leather or industrial grain.
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The seam and edge test
Look at the unlined edges at the collar, sleeve cuff, or inside pockets.
On real leather, the edge is clean and reveals the fibrous structure of the hide. It may be edge painted for finish, but the thickness remains visible.
Spotting real lambskin is a matter of touch, smell and attention to detail.
A good lambskin jacket is worn and patinas a lifetime.
See Sly&Co lambskin jackets.
