The bitless bridle market has expanded considerably in recent years. What was once a niche area of equestrian equipment has become an increasingly mainstream consideration for riders across a wide range of disciplines and experience levels. Walk into any good saddlery and you will find a growing range of options — but with that growth in availability has come a growth in confusion about what each design actually does, how it works, and whether it is appropriate for a particular horse, rider, and situation.

This guide cuts through that confusion with a clear, honest overview of the main bitless designs available in the UK — covering how each one works, its benefits and limitations, and its current status in affiliated competition.

An important note before we begin — bitless does not mean pressure-free

The most common misconception about bitless bridles is that they remove pressure from the horse. They do not. They redirect pressure away from the mouth to different areas of the horse's head and face — the nose, poll, chin groove, and sides of the face depending on the design.

These areas are sensitive in their own right. A poorly fitted or inappropriately used bitless bridle can cause as much discomfort as a poorly managed bitted arrangement — and in some cases more. The ethics of equipment use always depend on correct fit, appropriate design, and educated use, not on whether a bit is present.

World Horse Welfare has produced valuable guidance on recognising signs of discomfort in ridden horses that is equally relevant whether your horse is bitted or bitless. We would encourage all horse owners to be familiar with these resources.

For a broader discussion of when bitless riding might be appropriate for your horse, see our article on when might a bitless bridle be the right choice.

The mechanical hackamore

How it works

The mechanical hackamore operates through leverage. A rigid or semi-rigid nosepiece sits on the nasal bone, shanks of varying length extend below and behind the jaw, and a curb chain or strap sits in the chin groove. When rein pressure is applied, the shanks rotate — creating a squeezing action between the nosepiece above and the curb chain below, while simultaneously applying poll pressure through the headpiece. The length of the shanks determines the degree of leverage. Longer shanks create significantly more mechanical advantage for the same degree of rein movement.

Benefits

The mechanical hackamore can be effective for horses with genuine oral health issues that make bitting inappropriate. It is widely used in western disciplines as part of a traditional training progression, and for horses that are genuinely mouth-sensitive, it removes all pressure from the mouth while providing a degree of control that many riders find reassuring in faster work.

Limitations and welfare considerations

The mechanical hackamore is significantly more powerful than many riders realise — particularly with longer shanks. In inexperienced or unsteady hands it can cause considerable discomfort and even injury to the nasal bone, chin groove, and poll. The nasal bone has very little tissue protection, and a forceful or abrupt action can bruise this area relatively quickly.

It also offers limited lateral control compared to most bitted arrangements, with real implications for safety when precise directional guidance is needed. It is a design that requires educated, sympathetic hands and a well-schooled horse. It is frequently chosen by riders who believe it to be milder than a bit — when in reality it can be considerably more powerful if used with anything less than great care.

World Horse Welfare has raised specific concerns about the use of mechanical hackamores with long shanks, particularly in less experienced hands.

Competition compliance

Not permitted in affiliated dressage under British Dressage rules. British Showjumping permits hackamores in certain circumstances — check the current rulebook. British Eventing permits hackamores in the showjumping and cross-country phases at certain levels, but not in the dressage phase regardless of level. Always consult the current rules before competing.

The crossunder bitless bridle

How it works

The crossunder design — associated with brands such as Dr Cook, though several manufacturers now produce versions — features reins that pass from the cheekpieces of the bridle, cross under the horse's jaw, and attach to rings on the opposite side. When one rein is taken up, the action crosses under the jaw and applies pressure to the opposite side of the face, the poll, and the chin groove simultaneously — a gentle wrapping action around the horse's head rather than concentrated leverage.

Benefits

The crossunder is generally considered one of the milder bitless options. Its diffuse, wrapping action distributes pressure broadly rather than concentrating it in a single location. It is particularly popular for horses being introduced to bitless work for the first time, for horses with a history of oral sensitivity or bit-related anxiety, and for riders looking for a gentle bitless option for hacking and pleasure riding.

It is also useful during rehabilitation from mouth injuries or oral procedures, as it removes all pressure from the mouth while maintaining a familiar bridle arrangement that the horse can work in without anxiety.

Limitations

Rein signals are not as direct or precise as those available through a bitted arrangement or through some other bitless designs, which can make subtle lateral communication more challenging. Some horses find the initial sensation of the crossing action unfamiliar, and a careful introduction is important.

There have also been questions raised in equestrian science circles about whether the crossunder action might restrict jaw movement in certain circumstances — reinforcing the importance of correct fit and ongoing monitoring of the horse's response. For more on jaw movement and its relationship to relaxation and throughness, see our article on contact evasion in ridden horses.

Competition compliance

Not permitted in affiliated dressage. Compliance in other affiliated disciplines varies — check the current rules of the relevant governing body.

The sidepull

How it works

The sidepull is one of the simplest and most intuitive bitless designs. A noseband — in leather, rope, or other materials — sits on the nasal bone, with rein rings attached directly to its sides at approximately the position where bit rings would sit in a conventional bridle. When a rein is taken up, pressure is applied directly and laterally to the side of the nose — clear, proportional, and without leverage or crossing action.

Benefits

The sidepull's direct action is straightforward and honest. The horse feels exactly the pressure the rider applies, without amplification through leverage or the complexity of a crossing action. This makes it an excellent choice for horses being introduced to bitless work, for riders new to bitless riding who want something that feels as similar as possible to their bitted experience, and for general hacking where comfort and basic directional control are the primary requirements.

It is generally among the milder bitless options — provided it is correctly fitted and used with sympathetic hands. The nasal bone, while sensitive, is generally more tolerant of sustained light contact than the bars of the mouth.

Limitations

The sidepull's primary limitation is its modest degree of control in situations requiring more precise or powerful communication. For horses that are strong, anxious, or difficult to manage, it may not provide sufficient control for safe work in open spaces. It is best suited to well-schooled, responsive horses ridden in controlled environments or on familiar routes.

Competition compliance

Not permitted in affiliated dressage. Compliance in other affiliated disciplines should be checked against current governing body rules before competition.

The flower hackamore and combination designs

How they work

Flower hackamores — sometimes called jumping hackamores or combination hackamores — represent a middle ground between the mechanical hackamore and the softer bitless designs. They work through a combination of nose pressure, poll pressure, and a degree of chin groove contact, but without the significant leverage of long shanks. The nosepiece is generally softer and more padded than a mechanical hackamore, and the action more direct and less amplified.

Some combination designs allow a bit to be attached alongside the hackamore nosepiece, giving the rider the option of using bitted and bitless elements together — though this requires considerable skill and understanding to use effectively and ethically.

Benefits

For horses that find some degree of nose pressure acceptable but struggle with mouth contact — whether due to oral sensitivity, dental issues, or a history of bit-related difficulty — the flower hackamore offers a useful middle ground. It typically provides more control than a sidepull while remaining considerably milder than a long-shanked mechanical hackamore, and its more accessible action suits a wider range of riders.

Limitations

Correct fit is critical. A poorly fitted nosepiece creates concentrated pressure on the nasal bone in the same way as any other design. Multiple pressure points mean the horse's response needs to be carefully monitored to ensure all areas are comfortable.

Competition compliance

British Showjumping and British Eventing both have specific rules regarding hackamores and combination bridles that are subject to periodic review. Always check the current rulebook before competing. Not permitted in affiliated dressage.

The rope halter and scawbrig designs

How they work

Rope halters and scawbrig designs apply pressure to the nasal bone, poll, and in some designs the chin groove, using thin rope or cord that creates relatively concentrated pressure at the points of contact. The action is designed to be clear and immediate, with a sharp distinction between pressure and release that reinforces the horse's response through the clarity of the reward — release — when the desired behaviour is given.

Benefits

Within natural horsemanship and groundwork contexts, rope halters can be valuable training tools in experienced hands. The clarity of the pressure and release cycle is effective for teaching horses to respond to light signals and develop responsiveness on the ground.

Limitations and welfare considerations

The use of rope halters and scawbrig designs for ridden work is considerably more controversial, and we would urge significant caution. The thin rope that gives these designs their effectiveness on the ground creates very concentrated pressure on the nasal bone in ridden work — particularly with anything other than an exceptionally light and educated hand. In anything other than the most experienced and sympathetic hands, these designs carry a genuine risk of causing discomfort or injury in ridden work.

The British Horse Society emphasises the importance of using equipment appropriate to the horse's training level and the rider's skill. We would always recommend seeking expert guidance before using these designs for ridden work.

Competition compliance

Not permitted in affiliated competition in any mainstream British equestrian discipline.

The bosal

How it works

The bosal is a traditional western design with roots in classical Californian vaquero horsemanship. A rawhide or leather noseband fits around the horse's nose and jaw, with a heel knot at the back of the jaw that acts as a counterweight and as the attachment point for the mecate — the traditional rope reins of bosal riding. The action combines nose pressure with a gentle tapping or vibration at the heel knot, creating a nuanced form of communication that rewards softness and self-carriage with immediate release.

Benefits

In knowledgeable and experienced hands, the bosal is a remarkably subtle and effective training tool. It sits at the heart of the traditional vaquero approach — a progression designed to develop the highest levels of lightness and responsiveness — and when used correctly within that system it represents a genuinely sophisticated and horse-centred approach to communication.

Limitations

The bosal cannot be picked up and used effectively without a solid understanding of the training philosophy it belongs to. Used without that understanding, it causes confusion and discomfort rather than the lightness it is designed to create. It is best explored under the guidance of an experienced practitioner versed in the relevant tradition.

Competition compliance

Not generally permitted in mainstream British affiliated competition. May be appropriate in affiliated western competitions — check the rules of the relevant governing body.

Choosing the right bitless design

As this guide illustrates, the bitless world is considerably more varied and complex than it might initially appear. Each design works differently, applies pressure to different areas, and suits different horses, riders, and situations. 

Choosing the wrong design — however well-intentioned — can cause discomfort and confusion rather than the improvement in comfort that was hoped for.

The key questions to ask:

• Why am I considering bitless riding? Is it for the horse's benefit, and what specific issue am I trying to address?
• What is my horse's conformation, oral health status, and training history? Which designs suit their specific profile?
• What is my experience level, and which design can I use with genuinely educated, sympathetic hands?
• What discipline do I work in, and what does the current rulebook permit?
• Have I sought professional guidance to assess whether the design I am considering fits correctly and suits my individual horse?

Professional guidance is as important in the selection and fitting of a bitless bridle as it is for any bitted equipment. At The Fitted Horse, we hold the EvoEquine bitless bridle fitter certification — one of a small number of practitioners in the UK qualified in this specialism — and we offer professional fitting consultations for bitless bridles as part of our comprehensive equine equipment fitting services.

Key takeaways

✔ Bitless bridles redirect pressure — they do not eliminate it. The nose, poll, chin groove, and sides of the face are all sensitive areas in their own right

✔ Mechanical hackamores are significantly more powerful than many riders realise — they require educated hands and a well-schooled horse

✔ The crossunder and sidepull are generally the milder options and are well suited to horses being introduced to bitless work

✔ The bosal and rope halter designs require specific knowledge and experience to use correctly and kindly

✔ Competition compliance varies significantly between designs and disciplines — always check the current rulebook before competing

✔ Professional fitting assessment is just as important for bitless bridles as for any other piece of head equipment

Considering a bitless bridle for your horse?

At The Fitted Horse, we take an individual approach to every equipment decision — assessing your horse's specific conformation, sensitivity, history, and the context in which they are worked before making any recommendation.

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Further reading: When might a bitless bridle be the right choice? | Why a correctly fitting bridle is essential | Contact evasion in ridden horses | Dental care and bit fit