Worth Knowing

Wearing Halos® reduces the risk of brain injury.

From a one-off hit that might trigger a career or life-changing concussion, and, by wearing Halos® consistently in training and games it may reduce the accumulated burden of sub-clinical brain injury that triggers longer-term neurodegenerative risks.

No head-worn protection can guarantee to prevent all risk of brain injury.

The purpose of Halos® is to protect the brain, not physical head coverage.

It’s all about rotational force reduction to the brain. The design of Halos® reduces rotational forces i.e., the dangerous and relevant forces to the brain. It covers the areas of highest rotational injury risk – back, sides and front, and those areas of the head at the highest probability of incurring head injuries in sport. The top of the head is not covered as c.6% of injuries are to the top of the head and contribute to the lowest rotational forces experienced by the brain. Halos covers 53% of the head area based on surface area.

On impact, the Rotection® technology inside Halos® allows for the movement and opposing movement of the nine unique protective layers in a “zag-zag” way to absorb up to 30mm of movement, drastically reducing the transmission of rotational forces to the brain.

Scrum caps are regulated to limit any meaningful protection to the head, so are designed to only protect against superficial cuts/grazes and protecting the ears.

Scrum caps do not protect the brain – scrum caps increase the risk of rotational forces to the brain based on their padding design, as the gaps between the foam shapes allow for increased “catch points”.

The Halos® headband is not like a rugby scrum cap, as it is specifically designed to protect the brain, to provide rotational force reduction, to work in protecting the brain from concussive and sub-concussive impacts, and has a flat surface that reduces any catch points for increased rotational forces. Rezon Halos® is uniquely a legally certified piece of protective equipment, scrum caps are not.

Yes, provided the helmet still fits your head and you don’t damage or invalidate the helmet e.g. by removing the inner liner of the helmet.

Note: Hard helmets increase rotational brain trauma, by permitting more frequent and heavier impacts; whilst the skull is protected from fractures, the brain receives the full force of these greater rotational impacts.

Everyone, brain injury is an issue for all. It can impact whatever age, position, team, fitness and experience level.

Those with a previous concussion/brain trauma, females and those under 23 are at an increased risk.

Individuals with pre-existing neurological conditions are advised to consult their doctor before using the product.

A player should be removed from play as soon as they are suspected of having a concussion. Those who continue to play after suffering a concussion are more likely to have a higher number of symptoms and more severe symptoms, compared to those who stopped playing immediately after their injury.

Returning to play too soon can increase the risk of sustaining further injury and subsequent symptoms, requiring a prolonged period of recovery.

Changes in white matter, brain connections and blood flow can persist a year or more after a concussion. Repetitive brain injury can lead to long term progressive symptoms of brain injury due to chronic traumatic encephalopathy (CTE).

We don’t know any safe threshold tolerance for rotational forces to the brain, or if a certain number of impacts leads to later-life brain degeneration, or if there is a safe threshold of repetitive impacts in a game, season and career. Meaning, it’s more a question of how little brain trauma is in fact too much.

A textured silicon grip on the inner lining ensures that Halos® remains securely in place. Halos® has been extensively user tested to optimise the silicon gripping design, and with the design and ergonomics also tested as part of CE testing.

It is important to wear the correct size of Halos®, visit our size guide for more information.

Halos® protects the brain, whereas a scrum cap/headguard can only protect the surface of the head from cuts/grazes and protect the ears. So the protection choice is the brain versus the head.

There are two types of brain injury whatever the sport and level: Concussion and sub-concussion.

The frequency of sub-concussions is 500x that of concussions, the forces received to the head for a sub-concussion are 2-3x less, and a player does not get any symptoms of sub concussion. Head to head, ground, ball, knee, post etc impacts all create sub-concussions.

Multiple sub-concussions over the years damages brain cells and tears the tiny vessels around the nerves in the brain, creating abnormal inflammatory processes, which eventually become harmful. This is the start of the process causing CTE, whereby toxic tau protein in the brain is very gradually killing brain cells. So as brain protection, Halos® is focused on reducing sub-concussions.

It’s specifically about rotational forces to the brain. Halos® reduces rotational acceleration and therefore force by c.60%. An opportunity to reduce continual sub-concussive rotational forces by c.60% makes total sense for every player. More so, given the risk to children who start to play contact sports before age 12 and grow up to have poorer cognitive performance than their matched peers who started after the age of 12 years, then reducing as much as possible rotational forces to a child’s brain really is key consideration as a parent or coach.

Halos® is the only legal CE PPE product of its type, with a focus on sub-concussion reduction and proven to reduce rotational forces. Halos® protects more than a scrum cap/headguard.


If you play sports, you are at risk of impacts to the head which causes injury to the brain, and increases the risk of long-term neurodegenerative diseases, including CTE.

The brain defines and differentiates performance in the game of sport, and life. Protect your performance now.

The minimalist and discrete profile of Halos® does not change the nature of sport e.g. head-to-ball contact performance, power and accuracy, and the product operates across different environmental conditions.

A key design principle in developing Halos® was to reduce any false confidence when wearing Halos® or harming other players.

Choose the smaller size.

Halos® should be a secure, snug fit on the head. For further information, view our size guide.

Halos® are designed to last a season, but it all depends how frequently you use it and take care of the product.

The product should be replaced after 24 months from first use, and replaced immediately if it becomes damaged. Please inspect and check the product before each use.

No. Medical devices are used to treat a medical condition (i.e. after the event). Halos® is personal protective equipment (PPE) that actively mitigates injury (i.e. during the event). PPE is required by law to be independently tested and certified by an independent European notified safety and testing organisation.

The CE mark indicates that the product is compliant with the relevant EU legislation.

It is illegal to place any protective headwear on the UK and European product market for sale without PPE CE certification. Rezon Halos® is the first and only legally approved sports protective wearable of its type in the UK and Europe, having secured Category II PPE certification and is legally approved to use the CE mark.

No, World Rugby laws currently do not allow for any product that could reduce brain injury in the game.

World Rugby permits headgear in games with specifications imposed on thickness (10 + 2 mm max) and density (60 kg/m3 maximum density; 45 + 15/m3 tolerance band). This is based on Law 4 of World Rugby’s Laws of the Game and World Rugby Regulation 12 which allow only for the minimum level of head protection. This is why scrum caps are designed and regulated to only reduce surface cuts, scrapes and cauliflower ears.

In 2019, World Rugby introduced a medical device trial process allowing headgear to meet more flexible criteria and to be considered for use in gameplay, irrespective of the previous regulations. However, World Rugby’s definition of a medical device is at odds with both British and European law.

The law requires head protection to be tested and certified as Personal Protective Equipment (PPE) Regulation – PPE Directive (EU) 2016/425 before being legal to be sold in the UK and Europe. National and EU law has primacy over the codes of any sporting governing bodies. Rezon is legal under British and European law and reduces the risk of brain trauma.

Yes, Halos® is FIFA Rule 4 compliant.