RST Tech X Coolmax men's short sleeve baselayer top 100294
02 · Data & docs

The facts.

Technical data
BrandRST
ModelTech X Coolmax Mens Short Sleeve Top
Part number100294
Product typeShort sleeve baselayer top / base layer
GenderMen's
Sleeve lengthShort sleeve
Material / fabricCP-U Fabric
Special featureCoolmax Finish
Protective ratingNot a protective garment
DetailsDesigned for moisture management and temperature comfort during motorcycling
DescriptionThe whole story

Engineered from the ground up for riders who demand more from their first layer, the RST Tech X Coolmax Men's Short Sleeve Top brings a refined approach to moisture management beneath your riding gear. Built on CP-U Fabric with a Coolmax Finish, this baselayer has been developed specifically to pull sweat away from the skin and help maintain a stable, comfortable body temperature across a full day in the saddle.

Key Features

  • CP-U Fabric construction engineered for rapid moisture transport, keeping you drier across long rides and warm-weather touring
  • Coolmax Finish actively supports climate regulation, reducing the clammy, overheated feeling that builds under leathers or a textile jacket
  • Short sleeve cut minimises bulk under tight-fitting riding gear while maximising airflow at the shoulder and upper arm
  • Sits directly against the skin as a true first layer, improving the fit and feel of every outer garment placed over it
  • Lightweight and versatile — equally at home on summer commutes, track days and multi-day touring runs
  • Designed without protective rating so it complements any CE-rated jacket or suit without compromising compliance

Heritage, Design and Finish

RST has been producing performance motorcycle apparel since 1988, and the Tech X range represents the brand's focused approach to functional base layers — pieces that work without fuss, season after season. The Coolmax Finish is not simply a marketing label; it reflects a fabric treatment developed to enhance the wicking behaviour of the underlying CP-U Fabric, ensuring the garment continues to perform consistently even as temperature and exertion levels rise during a ride.

The design philosophy is deliberately restrained. There are no superfluous panels or gimmicks — just a clean short sleeve silhouette that lies flat under a leather suit or touring jacket without bunching at the cuffs or riding up across the torso. That attention to wearability under gear is the hallmark of a baselayer designed by people who understand motorcycling rather than simply applying sportswear principles to a riding context.

Performance on the Road and Track

Moisture management matters most when it is warm, when the pace is high, or when you are wearing a fully enclosed leather combination that traps heat efficiently. In each of those scenarios, a quality baselayer becomes the difference between arriving alert and arriving uncomfortable. The RST Tech X Short Sleeve Top addresses that directly: CP-U Fabric draws perspiration away from the skin so it can evaporate rather than saturate the garment, reducing the chilling effect that follows when a damp layer cools rapidly.

The short sleeve format makes this top the natural choice for summer riding, warm-climate touring and any situation where a long-sleeve layer would add unnecessary insulation. It also works well as a transitional-season piece worn beneath a mid-layer, giving the system flexibility without the extra weight of a dedicated thermal base.

Ideal Riding Scenarios

  • Summer and warm-weather road riding
  • Long-distance touring at higher temperatures
  • Spirited road and track sessions under leathers
  • Daily commuting in a jacket or suit
  • Riders who prefer minimal material under their outer gear

Fitment and Compatibility

The RST Tech X Coolmax Men's Short Sleeve Top is designed to be worn as a direct skin-contact base layer beneath any motorcycle jacket, leather suit or textile riding jacket. It carries no protective rating and is intended purely as a comfort and moisture-management layer. Available in sizes S/M, M/L and L/XXL to cover the full range of riding builds.

Specifications

  • Brand: RST
  • Model: Tech X Coolmax Mens Short Sleeve Top
  • Part number: 100294
  • Type: Short sleeve baselayer top
  • Gender: Men's
  • Sleeve length: Short sleeve
  • Fabric: CP-U Fabric
  • Finish: Coolmax Finish
  • Protective rating: Not a protective garment
  • Purpose: Designed for moisture management and temperature comfort during motorcycling
What's includedEverything in the box
  • 1x RST Tech X Coolmax Baselayer Short Sleeve Top
07 · Support

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