riding and bad posture becoming a real pain?

Riders of all levels from Olympians to hobby, along with coaches and ground support alike, are enjoying the transformational results of this unique patented gilet-style waistcoat.

Riders tell us how much the gilet is helping them stay top of their game and the boost to confidence it gives after injury.

For professionals who spend hours schooling, the gilet reduces risk of injury through muscle fatigue, potentially preserving a riding career, and indisputably enhancing the performance of their horses!

For those of us who cannot claim that ‘professional’ label, it’s a genuine game changer to keep us in the saddle and enjoying life.

Despite being a close body fit, freedom of movement is assured with overheating kept to a minimum, thanks to our unique airflow breathable fabrics, exclusive to the 4DflexiSPORT brand.  


Ten years' collaboration with Orthopaedic surgeons, riding professionals and Physio's has delivered this one-of-a-kind design protected Rider Gilet by 4DflexiSPORT. 

We found that, compared to other traditional bracing methods, better results could be achieved by adopting a waistcoat [gilet] design.  

We also discovered that the stigma about wearing posture correction aids often discourage their use. With this in mind, we have concealed the components that bring shoulders back, control the shoulder blades, straighten your spine and align shoulders with hips cleverly inside the gilet.

Powerful elements, again integrated, lift the diaphragm [upper body] away from lower body and horse activity resulting in lighter hand-to-horse contact, and the all-important independent seat.

Unlike most postural gadgetry, our Rider Gilet does not weaken musculoskeletal structures or create dependency, instead it enables you to strengthen muscles correctly, without risk of injury.

Lycra side panels expand to accommodate both male and female body shape. A low-profile fit means that it can be worn under a back protector, or as an outer layer with recent ruling making it permissible in competitions.


Shoulders Back System

Integrated straps draw shoulders back without restricting blood or nerve flow to the arms. 

Scapula Control & Correction

Uses a unique method for correcting shoulder blades, further enhancing shoulder strength and position.

Spinal Support

Flexible stays at either side of the spine straighten and strengthen back muscles.

Diaphragm Lift

Splinting at the front lifts the diaphragm activating core muscles and freeing hips from horse activity.

 Pelvic & Lumbar Support

Splinting at the sides and wide elastic hip pulls, featuring our 4DflexiSPORT branding, stabilises hips and supports the lumbar back.

Training Aid Features

Visible symmetry lines feature on the front and back enabling you to get the most out of training sessions. 


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Best Posture Reinforcement

Components align your body enabling you to recognise how correct posture should feel. This process is known as 'bio-feedback'.

By providing this vital information, muscle memory can be reset and good posture initiated. Once good posture has been established, and provided the gilet is not being used for medical reasons, it need only be worn again when your posture deteriorates or when your body is under strain.

Strengthens Core

The unique diaphragm lift provided by the gilet creates distance between the last rib and hip bone, the result of which activates core muscles, strengthening both upper and lower body movement. Riders also say it helps with breathing, and COPD sufferers report that both drawing back the shoulders and lifting the diaphram brings significant improvement to breathing.

After Injury

All riders, no matter how careful or competent, will sustain injury at some time in their riding life.

The Gilet can play an important role in building the confidence needed to get back on your horse again. It can also be included as part of your rehabilitation programme, helping you build strength correctly and safely.

Boob bounce

Big boobs can make it hard to maintain good posture. It can also be the cause of chronic back pain especially for horse riders, and if not adequately supported not only causes pain but damage to the breast tissue.

Using our Rider Gilet can reduce bust movement by as much as 80% whilst still allowing suppleness.

It does so by supporting and holding breasts firmly against the body whilst lifting the diaphragm and drawing shoulders back. Weight is distributed evenly across aligned symmetrical shoulders and spine, without pinching in the way that corsets and sports bras often can.

Training Aids

The Rider Gilet makes life so much easier for your trainer who, without having to constantly correct your posture can pay more attention to improving your riding skills and getting your horse going nicely.
We've added a reflective cross on the back of the gilet to provide visual posture feedback. It can also be used to determine whether rider or horse is uneven/unsound. A grey suede line at the front of each shoulder gives visual feedback for rider and coach particularly, when riding a circle i.e. line is visible in the riders’ peripheral vision if the body twists and the outside shoulder turns in. Similarly, correction can be made if your coach on the ground can see the line.

Surgeon, Science and Olympic Rider Backed

We have, for a number of years been working closely with Orthopaedic surgeons, physios, and Team GB Equestrian, along with past and present Olympic riders. 

Through listening and seeing first-hand how the gilet is helping them achieve their goals, and with the benefit of unequivocal medical credentials, we are proud to offer this tried and tested device. 

For us, posture is much more than shoulders back and sit up straight. It's about bringing symmetry, levelling and aligning shoulders with hips, raising your ribcage and correcting any twisting. In essence, helping your body find balance allowing muscles to work with relaxed efficiency.

Simply put, if one part of our body is out of kilter other areas are affected too, pain felt in the pelvis can often be traced to an issue in the shoulder.

Medical Uses


Scoliosis, Sciatica, Fibromyalgia, Sacroiliitis, Isthmic Spondylolisthesis, Spinal stenosis, Post-operative spinal surgery recovery, Spinal Osteoarthritis (Spondylosis), Vertebral compression fractures, Radiculopathy, Arthritis Sprains, Strains and aches caused by general wear and tear.


Osteoarthritis, Rheumatoid arthritis, Bursitis, Tendonitis, Instability (that can lead to repeated shoulder dislocations), Swimmer's shoulder, Adhesive capsulitis, Acromioclavicular joint problems, Rotator cuff tears, Impingement, Shoulder blade instability also known as Winging Scapular, Osteoarthritis - degenerative joint disease, Shoulder sprains, strain, wear and tear, Arthritis.


Herniated disc, Bulging disc, Degenerative disc, Thinning disc


Core muscles stabilize your spine and pelvis and help transfer strength to rapidly contract muscles for more powerful movements.

Signs of a weak core include poor posture, inability to stand up straight (slouching) and digestive disorders. Weak core causes include, hysterectomy, pregnancy (diastasis reci), caesarean section, surgery, injury or inactivity.

CHECK YOUR CORE STRENGTH; Take a breath and as you exhale pull your belly button in toward your spine. Hold for 10 seconds, then release. If you were unable to hold for the count this is a good indication of a weak core.


Use to support and build strength after injury and as part of a rehabilitation program. Can also be used to accelerate recovery, and importantly, provides physiological support giving you the confidence to get back on your horse again.

What people say about us


I discovered the rider gilet after using their specialist clavicle fracture gilet for my broken collarbone. I was so impressed at how fast my fracture healed and how much my posture had improved that I decided to buy the posture rider version. Now I don’t know what I’d do without it and recommend it to all those I coach.

Polly Holohan 

Olympic Event Rider

I found the Rider Gilet absolutely essential in my recovery from a terrible rotational fall four years ago after I sustained multiple fractures, I certainly couldn't have got back to riding as quickly as I did without it. Now I use it as a posture maintenance tool and for keeping me at my absolute best in the saddle. Incidentally, it also helps me recover faster after competitions. I'm very happy to recommend the gilet to clients and means I can concentrate on their riding rather than nagging them about posture.

Sophie Fretwell

3* International Event Rider

I love the rider gilet I purchased. I'm so pleased to have found it after riding accidents along the way have left me with multiple joint and muscle issues, diaphragm damage, and hunched shoulders. 

Arabella Mayo

Serving British Officer - Major with the Adjutant General's Corps and Centre 10 Advanced Coach 


After my collarbone was removed I thought my riding career was over. Since discovering the rider gilet some years ago it has been a real game-changer for me. It supports my shoulder and compensates for my lack of strength as a result of not having a collarbone. I wear it for training and under my body protector when competing and thanks to the gilet I have fulfilled my lifelong dream of competing at Badminton Horse Trials.

Louise Le Geyt

Winning Grassroots Event Rider 


I have ridden in my gilet four times now and my lower back has zero pain after riding. My riding coach thought I was leaning to the right but the cross on the back showed that it was in fact, my horse that was dropping her hindquarters. The fit is very good and I feel it is beneficial to me and really helping with my horses' training too.  

Jill Bowden 

Website Review

The Rider Gilet by 4DflexiSPORT

Out of stock
  • 29-33" Hip
  • 34-36" Hip
  • 37-40" Hip
  • 41-46" Hip
  • 47-52" Hip
  • 18" Long
  • 19" Long
  • 20" Long
  • 21" Long
  • 22" Long
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  • 24" Long
  • 25" Long
  • 26" Long
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  • 28" Long
Showjumper wearing 4DflexiSPORT Rider Gilet
The Rider Gilet by 4DflexiSPORT
Gilet sizing
The Rider Gilet by 4DflexiSPORT
Cross country horse rider wearing 4DflexiSPORT Rider Gilet under body protector
4DflexiSPORT unique breathable fabric
Showjumper wearing 4DflexiSPORT Rider Gilet
The Rider Gilet by 4DflexiSPORT
Gilet sizing
The Rider Gilet by 4DflexiSPORT
Cross country horse rider wearing 4DflexiSPORT Rider Gilet under body protector
4DflexiSPORT unique breathable fabric


  1. What size do I need and how do I fit it?
    CORRECT SIZE IS VITAL and we offer a free fitting service alternatively, you can watch our fitting video. We also include step-by-step pictorial guide with each gilet. Stretch side panels accommodate both male and female body shapes and various body length options ensure the best possible fit.
  2. What is the rider gilet made of and where is it made?
    Our gilet is made using high tech ultra-light breathable fabrics unique and exclusive to the 4DflexiSPORT brand and that does not have high rubber content such as Neoprene fabric. Like all of our products we are proud to say they are made in the Britain by our small team of highly skilled machinists.
  3. Will I become dependent on the rider gilet and weaken my muscles?
    Fear of becoming dependent on support is a valid concern. Our gilet has been developed in such a way that it does not weaken muscles nor make you become dependent on it for support. It does this by placing you in correct posture thereby activating and strengthening your musculoskeletal structures.

    In particular, the gilet precipitates distance between the last rib and hip bone and in so doing, raises the diaphragm to fully engage your core muscles, preventing slumping but essentially strengthening your core.
  4. How long does delivery take, and how much will it cost?
    Delivery is usually 2-3 working days from receiving your order. Postage is provided by Royal Mail tracked and is around £5.00. As a small businesss customer service is our priority and we do everything in our power to make sure you get your order quickly.
  5. Does the Rider gilet restrict movement?
    Absolutely not, the Rider Gilet is designed to fit like a second skin and move with you. Whilst delivering powerful shoulder retraction it follows musculoskeletal structures and does not restrict blood flow or cause pressure to underlying nerves. Shaping at the shoulders allows arms to lift and stretch forward without hindrance or cutting in at the underarms.  
  6. Can I wash the Rider Gilet?
    Indeed you can. The Rider Gilet is an easy care garment. Simply place in the cotton laundry bag that comes  with it and machine wash at 40C. Note: Do remember to remove the reflective cross from the back. It is attached with hook and loop and can be peeled off and re-adhered when dry. Otherwise all is washable and your gilet should come out looking as good as new!