Pilates Equipment Explained: Reformer, Mat, Cadillac, Chair, Barrel

What you'll see in a UK reformer studio

Walk into a boutique pilates studio in central London or a comprehensive studio in Manchester and you'll see a row of long, low, padded apparatus with springs, pulleys and a moving carriage. That's the reformer — the most recognisable piece of pilates equipment, and the centrepiece of most UK boutique studios.

But the reformer is one of five pieces of equipment that Joseph Pilates designed. Each does something different. Most UK studios run reformer-only or reformer-and-mat schedules; a comprehensive studio also offers Cadillac, chair and barrel work, usually in 1-1 or duet format. Knowing what each piece is for helps you choose the right studio and ask informed questions about your programme.

The Reformer

Roughly two metres long, the reformer has a sliding carriage (the moving padded platform you sit, kneel or lie on) connected to a frame by springs. You attach feet, hands or your back to the carriage and use spring resistance to load every movement.

Spring tension is adjustable — most reformers have four or five springs, colour-coded by weight. The instructor selects which springs to attach (or removes them) at the start of each exercise to set the resistance for your body and the movement.

What the reformer is exceptionally good at:

• Spinal articulation work. Bridges, roll-ups and rolling exercises are dramatically more controlled with the carriage support.
• Footwork. The most universal opening exercise: lying supine, feet on the bar, pressing the carriage out and back. Builds lower-body strength and ankle mobility.
• Single-leg and asymmetric work. Spring resistance lets the instructor isolate one side without the other compensating — exceptional for postural correction and rehabilitation.
• Pull-strap work. Ropes attached to the springs let you train pulling movements (rowing, pull-throughs) that mat alone can't replicate.

Group reformer classes in the UK typically run 4-12 reformers with one instructor; the higher end is a "high-volume" boutique while 4-6 is the standard for instructor-led detail. Class duration usually 45-60 minutes.

The Mat

The simplest piece of equipment is the one you don't notice at all: a thin padded mat on the floor. But the mat is where pilates was invented, and the mat repertoire — designed by Joseph Pilates as a series of 34 exercises that progress from foundation to advanced — is the conceptual core of every other piece.

Mat is bodyweight-only, sometimes augmented with small props (resistance bands, small balls, magic circles, rollers). It's accessible: lower cost than reformer, easier to translate to home practice, smaller-equipment-footprint studios run mat-only.

What the mat is exceptional at:

• Foundation movement principles. Centring, breath, control, precision and flow — Joseph Pilates's core principles — are taught most clearly without spring assistance.
• Daily home practice. A mat fits anywhere; a reformer doesn't. Most committed UK practitioners do reformer 1-2× weekly in-studio and mat 3-5× weekly at home.
• Affordability. Mat group classes typically run £8-18 in regional UK cities and £14-25 in London — half what reformer costs.

The Cadillac (Trapeze Table)

Looks like a four-poster bed crossed with a climbing frame. A padded table with vertical posts at each corner, the Cadillac (also called the trapeze table) has bars, springs, straps and trapezes attached to the frame for an enormous range of exercises.

You won't see Cadillac in most UK group studios — it's primarily a 1-1 or duet piece. Comprehensive studios offering Cadillac use it for:

• Suspension and inversion work. Hanging from the trapeze for spinal traction.
• Heavy spring-assisted stretching. The Cadillac's spring system can assist or resist mobility work in ways neither mat nor reformer can.
• Rehabilitation programming. Particularly valuable for members with limited floor mobility who can't roll off a mat or transfer onto a reformer carriage.

If you see Cadillac in a UK studio, it's a marker of comprehensive instruction. Polestar, BASI and PMA-trained instructors usually all have Cadillac in their training; mat-only certifications don't.

The Chair (Wunda Chair)

A small box with a padded top and a footbar at the front, springs underneath. The chair sits in roughly one square metre of floor space and is used either seated, standing, kneeling or in a multitude of inverted positions.

The chair's defining feature: every exercise is challenging. There's almost nowhere to hide on a chair — the small base means stability work is built into every movement.

UK studios using the chair tend to be comprehensive boutiques running advanced classes or 1-1 work. Chair work is rarely the centrepiece of a group class but is valuable as a programme adjunct for:

• Standing leg and balance work. Single-leg stepping, transitions.
• Closed-chain upper-body strength. Push-up patterns, dips.
• Spinal extension and back-strengthening work. Swan-on-the-chair is one of pilates's iconic exercises.

The Barrels (Spine Corrector, Ladder Barrel)

The barrels are curved padded structures used primarily for spinal mobility, back extension and flexibility work. Two main forms exist in UK studios:

• Spine corrector — a small curved padded barrel, used for thoracic extension over the curve, single-leg lifts and abdominal work.
• Ladder barrel — a larger barrel attached to a low ladder, used for standing stretches, scoliosis work and over-the-top spinal extension.

Like Cadillac and chair, barrels are primarily 1-1 or duet equipment in the UK. You'll see them most often in comprehensive studios that specialise in clinical or scoliosis-aware programming.

Equipment brands worth knowing

UK studios buy reformer (and other) equipment from a handful of established manufacturers. The brand isn't a strict quality marker — but if a studio's equipment looks worn, ask when it was last serviced.

• Balanced Body — California-based, the most internationally common. Allegro, Studio Reformer and Allegro 2 are popular UK models.
• Stott / Merrithew — Canadian-origin, also very common in UK studios. Distinctive look with slightly different spring system.
• Gratz — traditionalist apparatus, true to Joseph Pilates's original specifications. Less common in UK but found in classical-tradition studios.
• Pilates Designs by Basil — UK-relevant boutique brand.
• Reformer-A / Reformer Pro / various budget — newer entrants, more common in newer studios. Quality varies; ask about service interval and spring replacement schedule.

A well-maintained 10-year-old Balanced Body reformer is better than a brand-new budget reformer with worn springs. The age of equipment matters less than its servicing.

Which equipment for which goal?

For a typical UK practitioner, the right answer is:

• General fitness, mixed practice → mat at home + 1-2 reformer/week at a boutique. Most efficient and accessible.
• Back pain, postural concerns → reformer-led, ideally with some Cadillac or chair work for 1-1 sessions during the rehabilitation phase.
• Performance athletic carryover → reformer + chair + occasional barrel work for full-body programming.
• Pregnancy / postnatal → primarily reformer (more controlled and supportive than mat) with prenatal-qualified instructor; chair and Cadillac avoided in middle-late pregnancy.
• Rehabilitation, post-surgery → comprehensive studio with Cadillac available so the instructor has the full toolkit.

Why this matters when choosing a studio

Most UK pilates seekers default to "the closest reformer studio". That's reasonable for general fitness. But if you have specific goals — rehabilitation, prenatal, advanced practice, postural correction — a comprehensive studio with the full equipment range will programme more effectively than a reformer-only group studio.

When you visit a studio for the first time, ask: "Do you have Cadillac or chair? If yes, are 1-1 sessions available on the other equipment?" The answer tells you whether the studio is a high-volume group reformer operation or a comprehensive practice. Both are legitimate models, but they suit different members.

If you'd like help finding a UK studio matched to your goal and equipment preference, our matching service connects you with 1-3 verified studios within 24 hours.