When the mercury climbs and the leathers tighten, the layer closest to your skin matters most. The Spidi Seamless Base Layer Top L77010 is a men's motorcycle undershirt engineered for warm to hot conditions — delivering genuine moisture management and all-day comfort whether you're commuting, touring or pushing lap times on track.

Key Features

• Seamless knit construction eliminates pressure points and chafe under leathers or textile suits
• Polypropylene microfibre fabric wicks perspiration rapidly, keeping skin dry and comfortable throughout long rides
• Integrated perforated mesh panels promote active air circulation, drawing heat away from the body
• Four-way stretch fabric moves with the rider without bunching or restricting a tucked, sporting position
• Iron-free fabric — ready to wear straight from the wash with no fuss
• Versatile fit across road, track day and everyday touring use

Built for Heat — All Day, Every Ride

Spidi developed this base layer top specifically around the demands of performance riding in warm to hot temperatures. Rather than simply being thin, the L77010 actively works against heat build-up: the polypropylene microfibre construction pulls moisture away from the skin and disperses it rapidly, so sweat does not linger against the body during extended stints. The result is a consistently drier, cooler feeling even when ambient temperatures and riding intensity are both high.

The practical benefits extend well beyond track days. For everyday sport touring or summer commuting under a jacket, this kind of active thermal management reduces fatigue over long distances — a detail that becomes increasingly valuable the further you ride.

Material Construction

The fabric combination in the L77010 is chosen specifically for performance rather than cost. Three distinct constructions work in concert across the garment:

• Polypropylene microfibre weave — breathable, low weight, high moisture transport, iron-free
• Stretch fabric zones — provide unrestricted movement through the arms, shoulders and torso
• Perforated mesh — improves localised ventilation at high heat-output areas

The seamless knitting process removes the traditional stitched seams that create hot spots and friction under close-fitting motorcycle gear, replacing them with smooth, form-following structure that sits cleanly against the skin throughout a full riding day.

Ergonomics and Fit

The integrated articulated knit pattern is shaped around a forward-leaning riding posture, so the garment stays in place and remains smooth across the back and shoulders rather than riding up when you lean over the bars. The high stretch content means the top accommodates movement without tugging or distorting the outer layer above it — important under a well-fitted leather suit where any bunching immediately becomes noticeable.

Care Instructions

• Hand wash below 40°C
• Do not bleach
• Air dry only
• Iron at a maximum of 110°C
• Do not dry clean
• Do not wring

Intended Use

• Track / track day use
• Sporting road riding
• Everyday riding and touring

Fitment and Compatibility

The Spidi Seamless Base Layer Top L77010 is a men's motorcycle base layer top available in sizes SM, LXL and XXL/3XL. It is designed for wear beneath any close-fitting motorcycle suit, leather combination or textile jacket where comfort, moisture control and minimal bulk are priorities. Colourway: Black/Grey.

Specifications