Acerbis X-Cozy functional base layer – seamless three-season motorcycle shirt

The Acerbis X-Cozy is a technical motorcycle base layer designed to help manage moisture, temperature and comfort underneath riding gear. It is suitable for road motorcycles, adventure riding, enduro and other disciplines where the rider spends extended periods inside a jacket, jersey or protective armour.

The design combines seamless construction, a close ergonomic fit and micro-perforated ventilation zones across the chest and back. The technical fabric helps move moisture away from the skin and supports a more comfortable microclimate between the body and outer clothing layers.

X-Cozy is designed as a three-season base layer, making it suitable for spring, summer and autumn riding. In cooler conditions it provides a comfortable first layer beneath insulating and protective clothing, while in warmer weather it helps manage sweat and excess body heat.

Comfort starts with the base layer

Even the best motorcycle jacket can become uncomfortable if the layer directly against the skin becomes saturated with sweat.

A technical base layer is designed to:

• move moisture away from the skin,

• dry quickly,

• reduce the sensation of wet fabric,

• support temperature regulation,

• create a smooth layer underneath riding gear.

This is the core purpose of the X-Cozy.

Seamless construction

X-Cozy uses a seamless construction that reduces the number of conventional seams in areas that could otherwise create pressure or friction.

This is particularly useful underneath:

• motorcycle jackets,

• chest protectors,

• back protectors,

• body armour,

• backpacks,

• hydration packs.

During long rides or active off-road use, raised seams can become irritating. The seamless design helps reduce this issue.

Close ergonomic fit

Technical base layers perform best when they remain in contact with the body.

The elastic close-fitting design:

• follows body movement,

• reduces fabric bunching,

• prevents unnecessary folds beneath a jacket,

• allows unrestricted arm movement,

• adapts to different riding positions.

The shirt should fit close to the body without becoming uncomfortably restrictive.

Ventilation zones on chest and back

Micro-perforated ventilation areas are integrated across the chest and back.

These are high-heat and high-moisture areas during physical riding.

The ventilation zones help:

• improve breathability,

• move moisture,

• support airflow,

• improve comfort beneath additional layers.

Because the ventilation structure is integrated into the fabric construction, it does not require bulky additional panels.

Moisture management

Riders can sweat heavily even in relatively cool ambient temperatures.

This may be caused by:

• physical effort during off-road riding,

• waterproof motorcycle jackets,

• body armour,

• backpacks,

• slow technical sections,

• high outdoor temperatures.

X-Cozy helps move moisture from the skin towards the outer layers where it can evaporate more easily.

It does not guarantee completely dry skin in every situation, but it offers significantly better moisture management than a conventional cotton T-shirt.

Thermoregulation in changing conditions

One of the main advantages of technical underwear is its ability to work across a broader range of temperatures.

In cooler weather, it helps reduce the uncomfortable sensation of wet fabric directly against the skin.

In warmer conditions, it supports sweat evaporation and excess heat management.

X-Cozy is therefore useful for:

• cool spring mornings,

• warmer afternoons,

• summer touring,

• changing mountain conditions,

• autumn riding,

• multi-day motorcycle trips.

Three-season use

The shirt is intended for:

• spring,

• summer,

• autumn.

It is not a heavy winter insulation layer.

In colder weather, it should be used primarily as a technical first layer with additional insulation added according to temperature.

Polypropylene for moisture management

A major part of the fabric is polypropylene.

This synthetic fibre is commonly used in technical underwear because of its:

• low moisture absorption,

• quick drying characteristics,

• low weight,

• ability to manage perspiration.

Polypropylene retains relatively little moisture within the fibre itself, which is particularly useful during long rides or when travelling.

Nylon for durability

Nylon forms the second major part of the fabric.

It contributes to:

• mechanical durability,

• strength,

• resistance to repeated use,

• shape retention,

• comfortable fabric structure.

Combining polypropylene and nylon helps balance moisture management with the durability expected from motorcycle base layers.

Elastomer for stretch

The fabric contains 12% elastomer.

This allows the shirt to:

• stretch with body movement,

• return towards its original shape,

• adapt closely to the rider,

• avoid restricting the arms and torso.

Stretch is particularly useful during standing off-road riding and when the shirt is worn under protective armour.

Long sleeves can be shortened

One of the most practical X-Cozy details is the possibility to shorten the long sleeves into short sleeves.

The fabric construction is designed so that the cut edge does not develop conventional fraying.

This allows the shirt to be adapted according to:

• weather,

• riding jacket,

• protective equipment,

• personal preference.

A single shirt can therefore be configured for long- or short-sleeve use.

Long sleeves under jackets and armour

Long sleeves create a thin layer between the skin and:

• jacket lining,

• elbow armour,

• body armour,

• shoulder protection.

This can improve comfort during long rides and physically demanding use.

Short sleeves for warmer weather

If less material is preferred around the arms, the sleeves can be shortened.

This may be useful:

• in summer,

• under a lightweight mesh jacket,

• when travelling in hot climates,

• with selected protection systems.

The adjustable sleeve length increases the versatility of the shirt.

Suitable for road and off-road riding

Acerbis X-Cozy is not limited to one motorcycle category.

It can be used for:

• touring,

• adventure riding,

• enduro,

• motocross,

• supermoto,

• road motorcycles,

• daily commuting.

In every case, it works as a technical layer between the rider's skin and the protective equipment.

Useful for multi-day travel

Quick drying is especially valuable when travelling.

The shirt can be washed after riding and its synthetic construction dries considerably faster than ordinary cotton clothing.

This is useful for:

• motorcycle holidays,

• expeditions,

• multi-day rallies,

• lightweight travel.

It allows riders to carry fewer garments and wash base layers along the way.

Helps reduce friction under protectors

Body armour and other protection can place mesh, straps, protective inserts and structural edges directly against the rider.

A close-fitting base layer creates a smoother interface between the body and protection and can improve comfort during extended wear.

Not protective motorcycle clothing on its own

X-Cozy is a functional base layer.

It does not provide impact or abrasion protection in a crash and does not replace:

• a motorcycle jacket,

• chest protection,

• back protection,

• elbow or shoulder protection.

Its role is to improve comfort beneath protective riding equipment.

Choosing the size

The shirt is available in two size options.

Because it is a technical base layer, the intended fit is close to the body.

The fabric should:

• follow the body,

• avoid large folds,

• remain comfortable,

• not restrict breathing or movement.

Use the product sizing chart when selecting the correct version.

Layering the X-Cozy

A typical clothing system may look like:

1. Acerbis X-Cozy directly against the skin,

2. optional insulating mid-layer depending on temperature,

3. protective armour or motorcycle jacket,

4. outer weather-protection layer where required.

In summer, X-Cozy can be worn directly beneath a ventilated jacket or body armour.

In cooler conditions, an insulating layer can be added above it.

Care

Always follow the care instructions on the garment label.

For technical base layers, it is generally sensible to:

• wash after intensive use,

• avoid leaving the shirt wet with sweat inside a closed bag,

• avoid unnecessarily aggressive detergents,

• avoid ironing unless specifically permitted,

• allow it to dry completely before storage.

Correct care helps preserve fabric elasticity and functional performance.

Made in Italy

The Acerbis X-Cozy is made in Italy.

Its construction combines technical synthetic fibres, seamless manufacturing and targeted ventilation zones in a base layer developed for motorcycle use.

Technical specifications

• technical motorcycle base layer,

• three-season use,

• seamless construction,

• ergonomic close fit,

• moisture management,

• thermoregulation support,

• micro-perforated chest ventilation zones,

• micro-perforated back ventilation zones,

• high elasticity,

• unrestricted movement,

• long sleeves that can be shortened,

• construction designed to resist conventional fraying after shortening,

• available in 2 sizes,

• made in Italy.

Material

• 44% polypropylene,

• 44% nylon,

• 12% elastomer.

Main benefits

• effective first layer beneath motorcycle gear,

• helps move perspiration away from the skin,

• quick-drying synthetic construction,

• suitable for three-season riding,

• seamless design to reduce friction,

• chest and back ventilation zones,

• elastic close-fitting design,

• unrestricted movement,

• suitable beneath jackets and armour,

• sleeves can be converted from long to short,

• lightweight,

• suitable for short rides and multi-day touring,

• made in Italy.

Comfort begins with what is directly against your skin

The Acerbis X-Cozy addresses a part of riding equipment that may not be visible but can make a major difference after several hours on the motorcycle.

Its seamless construction reduces potential friction points, ventilated areas help manage heat and perspiration, and the polypropylene, nylon and elastomer blend follows body movement without unnecessary restriction.

With three-season versatility and sleeves that can be shortened, one X-Cozy can cover everything from cool spring rides to warm summer touring.