Flatiron Sex Position: How It Differs From Prone Bone and Flat Doggy
The flatiron sex position explained: how sources define it, how it compares with prone bone and flat doggy, plus pillow height, comfort and what to watch.
General education, not medical advice. If something here worries you, talk with a clinician.
Table of Contents
The flatiron sex position is a face-down, rear-entry position. In it, the receiving partner lies flat on their stomach with the legs together or close and the hips raised a little, often on a pillow. The other partner lies along their back and enters from behind.
If that sounds like the prone bone, it nearly is. The two names overlap, and flat doggy gets thrown in too, which is why so many guides blur them. Here the flatiron gets treated as its own position, because the closed legs and small hip lift change how it feels. Our take: it is one of the easiest rear-entry positions for the partner underneath, and the setup details, pillow height and the top’s weight, matter more than the name. The prone bone itself has a full guide in our low-effort lying-down positions roundup, so this page only summarises it.
How sources describe the flatiron position
The shape most flatiron guides agree on
Most descriptions share three features. The receiver lies face down, the legs stay together or nearly so, and the hips sit slightly higher than the rest of the body, often on a pillow. The partner on top lies lined up along the receiver’s body and enters from behind. Urologist Dr. David Samadi describes this face-down stack on his blog, and sexologist Laura Deitsch, quoted by the arthritis community CreakyJoints, describes the same basic shape.
Be aware of where these definitions come from. No sexual-health charity or medical body defines the flatiron by name. The descriptions above come from a doctor’s blog, a patient community, magazines and brands that sell sex products, so treat the details as common usage rather than a fixed standard.
The name is a joke about ironing: the receiver’s body is the shirt pressed flat on the board. Samadi calls it a sort of reverse missionary, because both people face the same way, one on top of the other.
Where the descriptions split
Leg position is the first difference: some guides keep the receiver’s legs straight and together, others allow them slightly apart. The pillow is the second. Most include one, but Cosmopolitan India describes its dragon position as the flatiron with a pillow added, which suggests its flatiron has none. We would start with the legs together and a thin pillow, since that is what gives the flatiron its own feel.
Weight is the third. One retailer has the partner on top press their chest and hips against the receiver’s back; other guides leave that choice open. The setup section below explains why we suggest keeping most of that weight on the forearms.
A few sources use the name for something else entirely. The sex-position site LoveCuri sends readers who want eye contact to a position it calls Flatiron, which is a face-to-face shape. So when someone mentions the flat iron sex position, it is worth checking which one they mean. This guide uses the face-down version, since most of the sources above describe that one.
Flatiron vs prone bone vs flat doggy vs doggy style
All four positions put the receiving partner in front with the other partner behind. What changes is how high the hips sit, where the legs go and how much each body works.
| Flatiron | Prone bone (often called flat doggy) | Downward doggy (pillow pile) | Classic doggy | |
|---|---|---|---|---|
| Receiver’s body | Flat on the stomach | Flat on the stomach | Torso resting on a pile of pillows, hips up | On hands and knees |
| Hip height | A small lift from a pillow in most versions | Flat, or lifted slightly to help entry | High, while the chest stays low | High, held up by the knees |
| Receiver’s legs | Together or nearly so | Not fixed; the top’s legs can sit over or just outside them | Knees on the bed under the hips | Knees on the bed under the hips |
| Effort for the receiver | Very low; the mattress holds the body | Very low; the receiver can stay still | Low; the pillows carry the torso | Higher; hands and knees hold the body up |
| Effort for the partner behind | Lies over the receiver, with their weight on forearms and knees rather than on the receiver’s back | Moderate; stays raised or lies fully flat | Moderate; kneels and can rest on the receiver’s back | Moderate; kneels behind |
| Depth | Snug with the legs closed; Skins calls it deep | Can be deeper than doggy, per Cosmopolitan UK | Not described by Bedsider | The reference point the others are compared with |
| Closeness | Full-length body contact | Full contact if the top lies down | Partial; the top can lie on the back | More distance than the flatiron’s full-body contact |
The flatiron and the prone bone are the closest pair, and the table reflects how the sources used here describe them rather than an agreed standard. Both lay the receiver flat; flatiron descriptions tend to add closed legs and often a pillow under the hips. The prone bone gets a full treatment, alongside its pillow-lifted cousin the speed bump, in our guide to lying-down sex positions. For the hands-and-knees original, see doggy style.
Flat doggy is the loosest name here. Cosmopolitan UK describes the prone bone as doggy style lying flat, so the flat doggy sex position usually means the prone bone column. The downward doggy column is a different, halfway shape from Bedsider, where the chest rests on pillows and the knees stay under the hips. None of the sources used here call that halfway shape flat doggy.
Why people choose the flatiron position
Low effort for the partner underneath
The mattress does the holding. Nothing has to balance on wrists or knees, so the receiver can stay still and relaxed. That is the flatiron’s biggest strength, and Laura Deitsch makes the same point: lying on the stomach gives a lot of relief to a receiver with hip, hand or knee problems.
Closed legs and a snug feel
Keeping the legs together changes the fit, making it feel narrower and snugger. Deitsch adds that squeezing the legs together can help some women reach a stronger orgasm. The bed presses back as well, and a slim vibrator tucked under the hips adds sensation without anyone having to hold it. For more on getting there, see how to have an orgasm.
Who it suits, and who may want something else
The flatiron position suits couples who like full-body contact and an unhurried pace. Some receivers also like keeping their face out of view, which can help a partner who feels self-conscious relax.
It is a poorer fit for anyone with neck trouble, because the head has to turn to one side. Deitsch advises skipping the face-down, legs-together shape with neck issues. Anyone who wants eye contact will not get it here either.
Setting up the flatiron for comfort
Pillow or wedge height under the hips
Start lower than you think. A thin pillow under the hip bones gives the small lift that most flatiron guides describe. If entry is hard or the angle feels wrong, add height a little at a time. The receiver should decide when to add more, because they feel the change first.
The mattress matters too. On a soft one the hips sink under two people’s weight, which is exactly what the pillow is there to correct. A firm cushion or a foam wedge helps when a soft bed pillow keeps flattening out.
Chest and neck comfort lying face down
Turn the head to whichever side is easier. A flat pillow under the chest, rather than a thick one under the face, keeps the neck closer to straight and leaves the mouth and nose clear. Arms can rest by the sides or above the head. With stiff shoulders, by the sides is usually kinder. Switch the head to the other side now and then, since the neck tires of holding one turn.
The partner on top keeps weight on their arms
Guides split on how much weight the top should rest on the receiver, from pressing along the back to staying raised. We suggest a middle path, because the receiver is lying on their ribs and cannot easily shift out from under. Forearms and knees take the load, and the top lowers only as far as the receiver wants. Ask, and then ask again later, since a weight that feels good at first can feel heavy after a while.
Lube, condoms and getting in
Closed legs and a flat body make entry harder than in doggy style. The easiest way in is to start in doggy and lower down together, or lift the hips slightly, with plenty of lube. Lube matters more here than in most positions, because the closed legs build heat and friction.
Pick the lube to suit your skin and your protection. ACOG says water-based lubricants suit sensitive skin, while silicone ones last longer. It also warns that petroleum jelly, baby oil and mineral oil can break latex condoms.
What to watch in a face-down position
Depth, hip height and deep pain
Hip height is one of the main depth controls. For many people a higher pillow tilts the pelvis toward deeper penetration, but how much it changes depends on both bodies and the angle, so adjust in small steps. Sexologist Marla Renee Stewart, speaking to Men’s Health about a similar pillow-lifted position, warns that this depth can be overwhelming or painful for the partner underneath. Closed legs can make the fit feel fuller as well.
If deep pain starts, lower or remove the pillow, slow down, or change position. Stewart also advises checking in with each other regularly. Keep movement controlled, too. Men’s Health warns that very vigorous movement can slip and cause accidental, painful penetration elsewhere.
Breathing, neck and back arching
Lying face down under another body puts weight on the ribs. Keep the face turned clear of pillows and the top’s weight off the receiver’s upper back. Agree on a signal for “ease off” that works without words, such as a tap on the bed.
Some guides tell the receiver to arch the back to lift the hips. If that feels like work, let a pillow do the lifting instead. SELF reports a sex therapist’s advice that lying stomach-down on a wedge can put less pressure on a sore back than missionary.
Penile angle and pain that keeps coming back
Penile fracture is rare, and intercourse is its main cause. In a 2017 study of 90 men treated for it, doggy style was the position most often reported at the time of injury, at 41 percent of cases. That figure describes how the injuries were spread across positions, not the risk of any one position, because the study could not count how often couples use each one. It says nothing directly about the flatiron. Keep the penile angle in line with the receiver’s body, and keep movement slow enough that slipping out does not end in a hard thrust. The reverse cowgirl guide explains the risk in full.
Pain that returns every time, or pain in every position, needs a different response. ACOG says nearly 3 out of 4 women have pain during intercourse at some point in their lives. It advises seeing an ob-gyn or another health professional about frequent or severe pain, to rule out causes such as endometriosis or ovarian cysts.
A side-lying alternative when face down does not work
Lying on the stomach does not suit every neck, chest or belly. When it starts to bother you, roll onto your sides. In spooning, both partners lie on their sides facing the same way, with the partner behind. The head rests on a pillow facing forward and nothing presses on the ribs, yet the closeness of the flatiron stays.
Bedsider lists spooning as a position for nights when both partners are tired. It also mentions easy variations, such as drawing the knees up toward the chest, and room for a toy. That makes it a good swap during a neck flare-up, or whenever face down has simply stopped feeling good.
FAQ about face-down rear entry
How is the flatiron position set up on a bed?
The receiving partner lies face down on the bed, legs together or close, with the hips raised a little on a pillow. The other partner lies along their back and enters from behind. Sources differ on details such as whether the legs stay perfectly straight. One site even uses the name for a face-to-face position.
Is the flatiron the same as prone bone?
They are close cousins, and the names often overlap. Both lay the receiver flat on the stomach with a partner behind and over them. In the guides used for this page, the flatiron tends to add closed legs and a small pillow lift, which makes the fit feel snugger, while prone bone descriptions leave the legs open to variation. That is a pattern in how these sources write about them, not a fixed rule, and some writers use the names interchangeably. Our lying-down positions guide covers the prone bone in full.
Is flat doggy the same as the flatiron?
They overlap, and nobody draws the line officially. Flat doggy, sometimes written as the flat doggystyle position, is a loose name for doggy style lowered toward the bed. Cosmopolitan UK calls that lowered shape the prone bone. The flatiron is a version of that lowered shape in which the legs stay closed and, in the guides used here, a pillow often lifts the hips. For a halfway version that is not fully flat, rest the chest on a pile of pillows with the hips up, as in Bedsider’s downward doggy.
Does the flatiron position work on a soft mattress?
Yes, with one change. A soft mattress lets the receiver’s hips sink under the combined weight, which flattens the angle. A pillow or firm wedge under the hips brings them back up. On a very soft bed, the partner on top may also find it steadier to place their forearms a little wider apart.
Choosing between the flatiron and its neighbours
Pick by what each body wants tonight. If the receiver wants to rest and you both want full contact with a snug fit, try the flatiron. If the legs need to be free, or the top wants to lie fully down, the prone bone is the easier version. A pillow pile under the chest gives the halfway downward doggy, and hands and knees bring back classic doggy style.
Whichever you choose, the receiver sets the pillow height, the top keeps weight on their arms, and either person can call a change at any point. And if face down stops feeling good, rolling onto your sides into spooning keeps the closeness without the strain.
Related reading
- Prone Bone Position, Speed Bump and Dragon: Low-Effort Lying-Down Sex Positions
- Doggy Style Position: Setup, Variations and How to Stay Comfortable
- Spooning Sex: Setup, Back Pain Research and Pregnancy
Sources
- Flat Iron | Sex Positions - Skins Sexual Health
- Sex Positions Women Want More - Dr. David Samadi (SamadiMD blog)
- 6 Sex Positions Worth Trying When You Have Arthritis - CreakyJoints
- LOVE Positions - The Flatiron - A Smooth Move for Maximum Heat - Love and Vibes
- Everything you need to know about the dragon sex position - Cosmopolitan India
- The Prone Bone Sex Position Guide - LoveCuri
- The prone bone sex position is doggy with a (lazy girl) twist - Cosmopolitan UK via Yahoo New Zealand
- 7 sex positions for when you’re exhausted but still DTF - Bedsider (Power to Decide)
- When Sex Is Painful - American College of Obstetricians and Gynecologists (ACOG)
- Speed Bump Sex Position: How to Do It, According to Experts - Men’s Health
- How to Have Great Sex If You Deal With Chronic Pain - SELF
- Penile fracture following sexual intercourse; A case report and literature review - PubMed Central (case report by Kajerero et al.)
- Relationship between sexual position and severity of penile fracture - International Journal of Impotence Research (Barros et al., PubMed abstract)