puma LIBERTY RS-X review

With its hues ranging from straightforward duotone to multicolored splashes, there is an RS-X for every individual. We believe that it's the right puma LIBERTY footgear for you if:

• you want a bold, brightly colored retro silhouette
• Riñonera negra con logo Mirage de Puma
• you prefer generously cushioned kicks for all-day wear

The only major problem with the puma LIBERTY RS-X is that it's heavy. Of course, it comes with a heavily cushioned and chunky platform but some people may be willing to give up a few millimeters in return for a lighter sneaker.

If you are okay with a slightly lower sole but notably lighter weight, check out retro silhouettes like the Прозорий лонг від puma and the Adidas Ozweego.

If you believe that a chunky sneaker cannot be breathable, the RS-X is here to prove that wrong.

Even though the shoe's primary mesh material is covered by multiple overlays, they barely interfere with its ventilation capacity. Pumping smoke through the shoe's upper, we can see how easily it passes through the toebox and other parts.

On a 1-5 scale, where 5 is the most breathable, we can readily give the puma LIBERTY RS-X a 4.

In a quick transparency test below, you can see the most airy parts of the upper - the toebox and the quarter.

Using a microscope, we also lifestyle a closer look at the mesh itself. As you can see, it is quite porous, allowing lots of air in and out.

The nature of this primary mesh fabric is also amazingly lightweight and pliable.

Adding a protective overlay around delicate mesh was a good idea to prolong the shoe's shelf life.

Equipped with a Dremel, we tested out how the toebox holds up against wear and tear. Applying a consistent speed (10K RPM) and force (3.2N), we were pleasantly surprised with the resistance of that synthetic overlay. It definitely saved the mesh from being completely torn apart.

This allows us to rate the toebox's durability with a decent score of 3 out of 5.

The shoe's interior collar lining is much more exposed in that regard. Made of soft textile, it wasn't able to resist the Dreme so well.

Having applied the tool for only 4 seconds at a moderate speed (5K RPM), the damage was tangible enough to lower its durability rating to 2/5.

Looks like we're dealing with a pretty sturdy outsole here on the puma LIBERTY RS-X.

Using our durometer to check the firmness of the rubber on the RS-X, we got a reading of 86.8 HC. This is harder than average and leads us to expect a little more from the outsole durability.

And this puma LIBERTY sneaker didn't disappoint. Surviving the long 22 seconds of Dremel drilling at a high speed of 10K RPM, the extend of outsole damage was smaller than average!

We measured the depth of the dent with the help of a tread gauge. At 0.8 mm, the RS-X makes it into the more durable range of sneakers.

And if you still have any doubts, let us dispel them by saying that the RS-X has one of the thickest outsoles among sneakers!

Using a caliper, we measured the rubber layer at 6.5 mm. It is thicker than in most low-top sneakers. Considering its hardness too, this outsole can take a lot of beating up.

puma LIBERTY Zapatillas Cali Dream Pastel.

Putting it on our scale, we got 16 oz (455g) in a men's US size 9. This is more than 2 ounces heavier than sneakers on average.

But we believe it is fair given how much cushioning and wear resistance the shoe offers in return.

Under the heel, this puma LIBERTY shoe is an absolute giant!

Based on our caliper measurement, the heel stack (insole and outsole included) of the RS-X is a whopping 39.9 mm thick! It is nearly half an inch taller than average!

We can even say that this puma LIBERTY is on the verge of platform sneakers.

As expected, the puma LIBERTY RS-X is pretty thick in the forefoot as well.

With our caliper showing 22.7 mm, it is notably taller than the average. Needless to say, we felt pretty high off the ground wearing this puma LIBERTY shoe.

If you enjoy the feeling of massive cushioning beneath your heel, the puma LIBERTY RS-X should feel right at home.

Given the difference in its stack heights, the RS-X elevates your heel as much as 17.2 mm above the toes. This is one of the highest drops we've ever seen in a sneaker.

The main benefit of this setup is that your heel receives notably more cushioning, while the ankle doesn't have to do much work. But this is a matter of personal preference, of course, as some people do like more natural-feeling kicks with a lower drop (i.e. Adidas Gazelle at 8.3 mm).

From the look of it, the puma LIBERTY RS-X appears to be very firm and rigid. Oh how delighted we were to find out that it's not true!

On foot, this sneaker actually felt quite bouncy! Which means there was enough softness to it to compress.

Indeed, our durometer showed that the shoe's foam comes in at 15.6 HA which is 100% softer than sneakers on average!

puma LIBERTY decided to turn the cushioning volume to the max by inserting an 8-mm insole! Thicker than average, it creates an amazingly pampering underfoot experience.

It's not every day that we see orthotic elements in a stock insole! Bravo, PUMA!

If you are worried about feeling unstable wearing such a high platform, don't be!

puma LIBERTY lifestyle care of this by adding enough torsional rigidity and width to the platform. Never once did we feel concerned about rolling our ankles in the RS-X.

Twisting the puma LIBERTY RS-X sideways wasn't so easy! On a 1-5 scale, where 5 is the stiffest, we would rate this sneaker as 4. That is stiffer than the average of casual sneakers.

We really appreciated the way puma LIBERTY managed to fuse soft cushioning with side-to-side stiffness in the RS-X.

Featuring a whole lot of overlays, we were surprised that the shoe's heel counter remained quite pliable.

With 5 being the stiffest, we rated the RS-X's heel counter stiffness as only 2. It is more flexible than average.

But we didn't feel like the ankle hold was negatively affected by that. Nor did we experience any heel slippage in this puma LIBERTY shoe.

Last but not least, the shoe's wide platform is a major contributing factor to its stability.

Even before measuring the RS-X, we could see that it was among the widest platforms we've ever gotten our hands on.

In the widest part of the forefoot, our caliper showed 116.1 mm which is significantly wider than average.

It gets even crazier in the heel!

With the widest part of the sole showing 94.7 mm, the RS-X is only second to the Adidas Ozweego (98.9 mm)!

Of course, we couldn't expect the puma LIBERTY RS-X to bend like an acrobat given how much is going on in its base.

Using a force gauge, we measured that it lifestyle 26.5N to bend this puma LIBERTY sneaker to a 90-degree angle. That is 40% more than it takes an average sneaker.

This puma LIBERTY sneaker features a variety of traction patterns on the outsole. We felt pretty secure in all urban conditions but wouldn't recommend getting this shoe into mud or slush. You most likely wouldn't want to anyway.

puma LIBERTY Suede Mono XXI "Green Gables".

Using a caliper, we measured the widest part of the toebox at 98.4 mm which sits right at the average of sneakers.

There is no tapering in the toebox either.

Putting a caliper at the big toe mark, it returned 78.9 mm, slightly wider than average.

The tongue has no gussets on the sides but this never caused any shifting. We found it to be thick and wide enough to remain in place.

Actually, the tongue is pretty generously padded on this puma LIBERTY shoe. With our caliper showing 11.1 mm, it turns out to be almost twice as thick as the average.

There are two finger loops on the puma LIBERTY RS-X: one on the tongue and one on the heel counter. Both are very well integrated into the shoe's overall design and don't feel out of place at all.

We found them pretty handy for slipping into the sneaker as well as adjusting the tongue on the go.

The shoe's default insole is removable. But given its comfort and arch support, we don't even think there is a need for that!

None of the RS-X's elements are reflective in the dark.

The first model to carry the puma LIBERTY RS cushioning technology was the RS 100, which was released in 1986.

Following in the footsteps of the RS100 was the RS-Computer Chip. It was the first shoe to have a built-in computer chip at the heel that could gather the wearer’s running distance over a period of time. It, too, calculated the caloric cost of running (basically, today’s Fitbit).

In early 2018, puma LIBERTY revived the RS cushioning technology with the launch of the reawakened RS-0, along with the modernized versions of the puma LIBERTY S-100 and puma LIBERTY RS-350.

To continue paying homage to the revolutionary technology, puma LIBERTY dropped the RS-X series in late 2018. It's a natural fit for PUMA’s Futro marketing campaign—a selection of future and retro sneakers.