The questions people ask before they buy.

For anyone whose toes spend the day held together in shoes and who is willing to spend ten minutes, every other day, working them from a spread position. That covers most adults. The sport pages exist because runners, climbers, dancers and football players load the toes in specific ways; the routine is the same for everyone else.

Not for: anyone with reduced sensation in the feet, an injured or recently operated toe joint, or a serious foot condition, without clearance from whoever manages it. And not for anyone hoping to wear it passively and see change — the one trial that tested that found none.

Yes. Most people who buy one are not. The reason to use it is what ordinary shoes do to the toes all day — a toe spring that lifts them and a toe box that holds them together — and that applies whether or not you run. What your shoes do to your toes is the page for you.

We do not sell it as a treatment for any of those, and no study has tested Toe-Rx on any of them. What we can do is point you to what the research says about each — including where it says nothing:

• Bunions — the one condition where trials on toe spreading plus exercise exist; mild to moderate cases, a few degrees of change.
• Hammertoe — flexible vs rigid matters; strengthening is discussed in the clinical literature.
• Flat feet — most are not a problem; a newly dropped arch needs a clinician.
• Plantar fasciitis — foot strengthening has not been shown to help it; see a clinician.

If your foot hurts, that is a reason to see someone, not to buy something.

There is a reason: toe strength and toe deformity are among the measurable factors in falls in older adults, and foot-muscle training improved balance in a meta-analysis of 13 trials. The falls article lays it out with the limits. On safety, the same rules as everyone: bare feet, seated, Soft first, and a clinician's OK if you have reduced sensation or a foot condition.

The smallest size fits from women's US 4.5, so it physically fits many teenagers. [CONFIRM the maker's recommended minimum age before publishing this answer.] For a growing foot, we would want a clinician or coach to say so first.

Please don't use it without asking whoever manages your care. The routine depends on feeling what your toes are doing, and on noticing pressure before it becomes a problem. Reduced sensation removes both safeguards.

Not until it has been cleared. A sprained big toe, a healing fracture, a joint that is thick from an old injury — whoever is managing it decides whether anything goes between the toes, not a web page. The football page covers the turf-toe case specifically.

Silicone spacers are made to be worn — in shoes, on walks, for hours — and to hold the toes apart passively. Toe-Rx is not worn; it is used, for ten minutes, sitting down, and the point is the second half: closing the toes against it. In the one trial that isolated it, wearing a toe orthosis passively for eight weeks changed nothing; adding the closing movement changed every measure. That finding is why Toe-Rx is a trainer, not a spacer, and why you cannot wear it in a shoe. Why you close them against it.

Because towel curls mostly train the calf. Measured with electrodes, curling the toes recruits the long flexors that run from the lower leg; the small muscles inside the foot barely join in. Gripping from a spread, lifted position — what Toe-Rx sets up — is the pattern that recruits the muscles inside the foot. The measurements are here.

Soft first, whoever you are. Not because feet are fragile, but because the movement is unfamiliar and the first week is where people push too hard. The maker prints the same advice on every box sold in Japan. Move to Firm when Soft feels easy rather than merely bearable — for most people a few weeks in. Same shape, same price; only the foam differs. Compare them.

No. Most people start with Soft and, if they want more resistance later, add a Firm. Some stay on Soft. Buying both at once is not something we push.

Start from your everyday street-shoe size — not your running shoe, cleat, climbing shoe or pointe shoe, all of which are fitted tight on purpose. Women's 4.5–7 is Small, 7–9.5 Medium, 9.5–12 Large; men's 7–8.5 Medium, 8.5–14 Large. The full chart, with the three sizes shown to scale, is on the size guide.

Shoe size measures length; what has to fit here is the width and thickness of your toes. Thick or broad toes: go up. Slim, long toes: go down. Women's 7 and 9.5 and men's 8.5 sit on the line — let your toe shape decide. And if you get it wrong, we swap it (below).

The first slot will feel tighter than the others — that is the deformity, not the sizing. If it reads as firm pressure, it fits. If it reads as pain, size up or choose Soft. If the big toe is rigid and will not straighten by hand, that is a question for a clinician before it is a question of size.

The maker's chart gives no men's range for Small. If your men's US size is below 7 you are in Small territory, but at that size, measure your bare foot rather than trusting a conversion. [Replace with the maker's men's Small range if confirmed.]

On an iPhone or iPad, open the size guide or any product page in Safari and tap the AR icon on the 3D model. It places a full-size Toe-Rx on your floor. Hold your bare foot beside it — the closer the image sits to the floor, the more accurate the size. On Android the same icon opens Scene Viewer.

We exchange it — even after you have worn it. Sizing from a shoe size is an estimate, and the only way to find out is to put it on. If yours pinches or slips, get in touch within [30] days of delivery and we will send the size that fits. Please do that rather than adapting to it; wearing the wrong size is uncomfortable and can cause injury.

About ten minutes per foot: put it on, sit with the toes held open for three to five minutes, circle them by hand, then lift–press–release fifteen to twenty times. Then the other foot. Every other day is enough. The trials ran two sessions a week; nothing we have read says daily beats that.

You can, but expect nothing. Twenty-four people wore a toe orthosis for eight weeks; the half who added the movement improved in every measure, the half who only wore it changed in none. The grip is the routine. Why the toes are held apart explains why we still open them first.

No, no, and no. It is a seated tool. It does not fit in a shoe, it is not made to be walked on, and it should not be on your feet when you are not paying attention to them.

Do it after, not before. The Open step is a long static hold, and holds of 60 seconds or more have been shown to reduce maximal force for a while afterwards. The minutes before explosive effort are the wrong minutes for it. After activity, or on a rest day.

Yes — the foam does not absorb water. The Open and Circle steps work in a bath, a foot soak or a cold tub. The Grip step needs a floor to press into, so do it on the bathroom floor afterwards. Rinse and let it air-dry.

Strange, not painful. Feet that live in shoes have very little experience of being wide, and the first few sessions feel odd. Firm pressure between the toes is expected. Sharp pain, numbness or a toe that will not go into its slot are not — take it out and check the size.

We would rather not guess. The trials that measured change ran eight weeks, and what they measured were angles, muscle size, balance and arch movement — not how the feet felt. Some people say their toes feel different after the first week; that is a report, not a result. Give it eight weeks, every other day, before judging it.

No. The shape is symmetrical, so either one goes on either foot.

Sizing makes it unlikely two people fit the same one well, and it sits between bare toes for ten minutes at a time. We would treat it as personal, like a toothbrush. If you do share, rinse it between users.

Yes, and it is linked wherever we use it. Foot-muscle training has been tested in randomised trials: a 2023 meta-analysis of 13 of them found strength, balance and arch support improved and pain did not; a year-long trial in runners cut running injuries 2.4×; an eight-week trial in athletes improved cutting and did nothing for sprint speed. The Grip page lays out what changed and what didn't, tile by tile.

No. The trials tested foot exercises, toe-spread-out exercises and toe-flexor training, with other equipment or none. We cite them for the movement Toe-Rx is built around, not for the device. Where the loading in a trial was heavier than foam can provide, we say so.

We don't claim any of those. Circulation and posture: no research we could find supports it, so we don't say it. Speed: two studies looked, and toe strength did not relate to sprint time or running economy. Where toe strength has been shown to matter is cutting, agility and horizontal push-off — angled movements, not straight-line ones. The sport pages spell that out per sport.

Because a toe trainer is an easy thing to oversell, and most are. We decided the only durable way to sell one is to say what the evidence supports, say where it stops, and let people decide. If that costs us a sale to someone who wanted a miracle, that is a sale we would have refunded anyway.

Molded polyethylene foam — light, springy, and non-absorbent. It is not rubber and not silicone, so there is no natural-rubber latex in it. The surface has a fine embossed texture so it does not cling to the skin.

In Ashikaga, Tochigi Prefecture, Japan, by Dr. L Co., Ltd., who designed it in 1988 and have made it ever since. In Japan it is sold as Ashiyubi Genki-kun; more than two million pairs have sold there. About us has the story and the people who sell it here.

Used every other day, a pair typically lasts 3y. Replace it when the foam no longer springs back or a slot has torn. The foam is the resistance, so once it softens noticeably it is doing less.

Rinse it under water and let it air-dry. It does not absorb water. No dryer, no radiator.

Blue only, in the US. Soft and Firm are the same colour; the box and the label tell them apart.

M-Cross Marketing Corporation, a ten-person company in Torrance, California, that buys directly from the maker and ships from its own stock. Address, phone and faces are on About us.

Free within the US. Orders are processed within five working days of confirmation and ship from Torrance; you get an email with tracking when it goes out. Shipping policy.

Canada: yes, order here as normal. Anywhere else: send us your country and region and we will work out the shipping and email you a quote before you commit to anything.

Wrong size: we exchange it, even after you have worn it, within [30] days of delivery — contact us and we send the right size. Changed your mind: unused, in its packaging, within 30 days, for a refund. Damaged or wrong item: tell us as soon as it arrives and we sort it. Full policy. Email: [CONTACT EMAIL].

Toe-Rx is not a medical device, and we do not market it for a medical condition.

Yes — clinics, studios, gyms and retailers. Wholesale & partner program.