Current retailer: WalkingPad UK. X21 offers double-fold storage, 12 KPH top speed, 110 kg capacity and sub-65 dB tested noise claims.
Fire & PlungePremium buyer's guide
WalkingPad X21 Double-Fold Treadmill

WalkingPad UK

WalkingPad X21 Double-Fold Treadmill

Shortlisted1007 x 711 x 225 mm folded
£699 Double fold

The X21 is the higher-spec hybrid option with 12 KPH top speed, double-fold storage, 1007 x 711 x 225 mm folded dimensions and a 110 kg user capacity. It is the walking-pad-adjacent product for buyers who still want the room to feel elevated.

Folded size:1007 x 711 x 225 mm
Speed + power:12 KPH / 918W / 110 kg cap
Double fold
<65 dB tested
Visit official retailer Read the walking-pad shortlist

Retailer stock, pricing and delivery details can move. Check the merchant page for the live listing.

12 KPHHigher speed ceiling
110 kgUser capacity
918WRated power
1-year coverWalkingPad warranty
Why it stands out

This is the more ambitious walking product in the range. It brings more treadmill energy while still staying within the broader aesthetic world of the site.

Room-fit note

It is still more domestically legible than a full gym treadmill, but it wants a clearer storage plan and a bigger parked footprint than the P1, C1 or Z3.

Retailer facts

WalkingPad UK currently lists 3-5 day free shipping, a 1-year warranty, double-fold technology and sub-65 dB real-world-tested noise claims.

Why we recommend it

It gives the recovery category a higher ceiling. Without something like the X21, the range would only tell a light and compact story.

Use

Higher-spec hybrid

The X21 is the model for buyers who still care about room tone, but need more performance than the gentler pads can offer.

PerformanceHigh
Storage easeModerate
NoiseControlled
What stands outDouble fold

The double-fold idea is what keeps this model in the Fire & Plunge world rather than pushing it into generic gym hardware.

What to planSpace

This still asks much more of the room than the flatter walking pads do, so measure the parked footprint before you get seduced by the spec sheet.

Related read

Need something quieter and lighter instead?

The Z3 Hybrid+ and P1 are both easier to live with if portability and lower visual weight matter more than a 12 KPH ceiling.

Compare the Z3 Hybrid+ Read the room-fit note

You may also like

More pieces from the same world.

Shortlisted WalkingPad Z3 Hybrid+
WalkingPad UK

WalkingPad Z3 Hybrid+

Shortlisted<65 dB
£399
View product
Shortlisted WalkingPad P1 Foldable Walking Pad
WalkingPad UK

WalkingPad P1 Foldable Walking Pad

Shortlisted822 x 547 x 129 mm folded
£329
View product
Shortlisted WalkingPad C1 Under Desk Treadmill
WalkingPad UK

WalkingPad C1 Under Desk Treadmill

Shortlisted22kg foldaway
£309
View product
Shortlisted CenturaHeat 4-6 Person Outdoor Barrel Sauna
Pro-Line Direct

CenturaHeat 4-6 Person Outdoor Barrel Sauna

Shortlisted4 to 6 person
£4,054.68
View product

FAQ

Questions buyers ask before they commit.

How fast does it go?

WalkingPad currently lists the X21 with a 12 KPH top speed, which is a meaningful step up from the lighter walking-focused models.

Is it still relatively quiet?

WalkingPad currently references sub-65 dB real-world-tested noise claims for the X21.

Who should choose it?

Choose it if the lighter pads feel too soft for your needs but you still want something with a foldaway story and cleaner visual tone than a typical home treadmill.