Somewhere in your studio there's a box. Inside: four balls in three sizes, a few bands, two Pilates rings. Bought because they came up in training. Used: rarely.
And when you do pull them out, here's what happens. You spend two minutes explaining who gets which ball. Three people have the wrong size. One rolled hers under the carriage. The training effect you grabbed the thing for in the first place has long since evaporated.
Short version: A small prop belongs in your reformer class only if it does one of three jobs — giving feedback, adding resistance, or supporting a position. If it does none of those, it's decoration. And in a group class, decoration is expensive, because it costs you time and attention.
What Jobs Can a Small Prop Actually Do?
Almost every article on Pilates props will tell you the possibilities are "nearly endless." True — and completely useless for planning.
The more useful question runs the other way: what exactly is this thing supposed to accomplish here? There are three answers.
1. Feedback
The prop makes something felt that you could otherwise only say out loud. A ball between the knees reports back instantly the moment the legs drift apart. A ring under the hands shows whether both arms are pulling their weight.
This is the strongest reason to use a prop — and the most underrated one. A small prop can replace a cue you'd otherwise have to repeat three times. For why cues built around an external reference point often land better than instructions about the body itself, see the article on cues that don't land.
2. Resistance
The prop makes the exercise harder without touching the springs. The ring during adduction work, the band during arm work, a light weight in a kneeling position.
The practical upside: you can raise the intensity inside a single spring block. No carriage stop, no re-rigging, no break in the flow.
3. Support
The prop makes a position accessible that wouldn't otherwise work. A ball under the pelvis when the hips won't reach full extension. A rolled towel under the head for someone with a short neck.
This is the use case that pays off most in mixed-level groups — it brings people into an exercise instead of leaving them out of it. More on that in the article on mastering mixed-level classes.
"If you can name, in one sentence, which of the three jobs the prop is doing, it belongs in the class. If you can't, leave it in the box."
Which Small Prop, for What?
You don't need a collection. Three props cover the three jobs.
The Pilates Ring (Magic Circle)
The most versatile prop for group teaching. It gives clear resistance that your client dials in herself — she pushes as hard as she can manage. That makes it self-scaling by design.
Good for: adduction between the knees, arm work in front of the chest, shoulder connection while kneeling, feedback during leg work.
On sizing: around 15 inches (38 cm) fits most people. Under 5'5" (1.65 m), a 14-inch ring is more comfortable; over 6'1" (1.85 m), go up to 16 inches. For group rooms, choose medium resistance over firm. A ring that's too stiff almost always ends with people compensating through the shoulders and jaw — you'll see effort, but not the muscles you were after.
The Small Ball
Soft and unstable. That's exactly why it can do two things the ring can't: create stability work, and support a position.
Good for: a ball under the pelvis during bridging, between the ankles during diagonal leg work, behind the back for core work on the long box.
Typical diameters run from about 7 to 15 inches (18–38 cm). For reformer work, smaller is more practical — it gets in the way less when the carriage is moving.
The Resistance Band
The cheapest prop, and the one with the longest range of motion. It adds resistance along a path the springs simply can't reach.
Good for: arm work seated or standing, shoulder external rotation, pulling movements to balance out everything the reformer pushes forward.
The downside in a group room: bands slip, curl up, and after three months look like chewed gum. Plan them deliberately — not as a spur-of-the-moment grab.
Prop Chaos: The Mistake That Costs You Teaching Time
The real problem with small props is rarely the prop itself. It's the logistics.
Every time you hand something out to a group of ten, you lose a minute or two — and the flow along with it. Do that three times in a class and you've lost five minutes and broken momentum three times. Out of a 50-minute class, that's a lot.
The fix is the same one that works for springs: plan in blocks. If you already batch your spring changes — exactly what the guide to reformer spring settings recommends — treat props the same way.
Concretely, that means:
- One prop per class. Two at most, with clear separation between them.
- One continuous block. Three to five exercises in a row with the same prop, instead of grabbing and putting it down four separate times.
- Set it out before class. On every reformer, not in the box against the wall. This is the one tip here guaranteed to save you a minute.
- Say once where it lives. "The ball stays by your head until the end" heads off ten follow-up questions.
And if you're going to need the prop for half the class anyway, make it the theme. A class built consistently around the ring feels more coherent than one where it pops up twice and disappears. For ideas, see the 24 class-theme ideas.
When Are You Better Off Without a Prop?
There are three situations where a prop makes the class worse.
When the base exercise isn't solid yet. A ring between the knees doesn't help someone who's still hunting for pelvic position in bridging. Pattern first, add-on second. Otherwise you're training a compensation, with resistance attached.
When you're only reaching for it out of boredom. The feeling that every class starts to blur together is real — but a prop is rarely the fix. What's usually missing is variation in tempo, position, or transitions. The six-variable framework solves that without adding a single prop.
When the group is brand new. In a first class with a new group, you already have your hands full sorting out names, levels, and spring literacy. Props can wait until class two.
How to Build a Small Prop Into Your Next Class
Three steps, ten minutes of planning.
Step 1: Decide the job, not the prop. Not "I'll grab the ball," but "I want them to feel their adductors working." The right prop follows from the job almost automatically.
Step 2: Fit it into a spring block. Find the stretch of your class where the spring setting already stays the same for three or four exercises. Hang the prop there. No extra break in the flow.
Step 3: Say one sentence about it. Why is this thing here right now? "The ring shows you if both legs are working equally." One sentence is enough — but without it, the group just sees an object.
After that, the simplest check of all applies: would the exercise work just as well without the prop? If yes, leave it out. You'll save yourself and the group a minute.
For anyone who wants to go deeper on this systematically, the Swiss training provider art of motion runs a dedicated module on rollers, toning balls, and the Magic Circle. For how small props fit into the bigger picture of the machine itself, see the guide The Reformer Explained.
Want class plans where the ring and ball are already put to good use?
Pilates Plans gives you ready-made reformer class plans — with spring settings, cues and exercise videos.
→ Get a free class plan
Frequently Asked Questions
Which small props do I actually need for reformer classes?
Three cover almost everything: a Pilates ring (Magic Circle), a small ball, and a resistance band. Together they handle the three jobs a prop can actually do — giving feedback, adding resistance, or supporting a position. Anything beyond that is nice to have, not necessary.
What size Pilates ring should I get?
As a rule of thumb, about 15 inches (38 cm) across fits most adults. Under about 5'5" (1.65 m), a smaller 14-inch ring is usually more comfortable; over about 6'1" (1.85 m), go up to 16 inches. For group classes, choose medium resistance over firm — a ring that's too stiff almost always gets people compensating with the wrong muscles.
Ring or ball — which is better for reformer class?
They do different jobs. The ring gives clear, adjustable resistance: your client controls the intensity with her own effort. The ball is soft and unstable, and it's mainly good for stability work — or for supporting a position, like under the pelvis. If you can only pick one, the ring is the more versatile tool for group teaching.
How often should I use small props in a reformer class?
One prop per class, in one continuous block. More than two costs you more time handing out and explaining than it adds in training value. Plan the block the way you plan a spring block: hand it out once, string several exercises on it, collect it once.
