



Men's Venti Force Sierra Running Shirt
A premium staple for runners who value effortless comfort and technical performance. The Venti Force Sierra Running Shirt combines advanced lightweight fabric with a relaxed fit, heat-bonded finishes, and ultra-light breathability to keep you cool and distraction-free—whether you’re chasing a new PR or enjoying an easy recovery run.
- Estimated US delivery: Sep 20 - Sep 24
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Free shipping on US orders over $150
- Lucas wears size M is 5' 11" (180cm) and is 156lbs (71kg)
- Loose fit
- Fits true to size
Every piece is made from high-performing fabrics which have exceptional qualities to help you get the best of yourself. Here are a few tips and guidelines to keep them in the best shape possible for as long as possible:
- Don’t let your items sit around dirty/sweaty
- It is best to wash all of your triathlon apparel separate from the rest of your wash
- High temperatures ruin fabrics so please hand wash or machine wash under delicate cold wash mode only (<85*F)
- Use high quality detergents free of dye, perfume or softeners
- Do not use fabric softeners, iron, dry clean or bleach
- Hang dry, do not tumble dry

Ultra-Light & Breathable
Crafted from an 86% polyester / 14% elastane blend that feels barely there and keeps air flowing on every run.

Moisture-Wicking & Quick-Drying
Structured fibers pull sweat away and dry fast to maintain comfort even on the hottest days.

Chafe-Free Comfort
Heat-bonded sleeves and hem eliminate bulky stitching for a clean finish that won’t irritate your skin.

Relaxed Fit Freedom
A slightly looser cut provides a casual feel with technical performance—perfect for easy runs or long training days.
EVERY DETAIL MAKES A DIFFERENCE

Heat-Bonded Finishes
Laser-clean edges prevent bouncing, stretching, or extra weight when damp from sweat.

Bounce-Free Design
The lightweight finish keeps the shirt from shifting or weighing you down as you move.

Structured Surface Fabric
Minimizes skin contact to enhance airflow and reduce cling when wet.

Why You'll Love It
Relaxed Runs, Elevated Feel
Designed for runners who appreciate comfort without compromising performance, the Sierra Running Shirt keeps you dry, cool, and free-moving. Whether you’re logging easy miles or taking it to race pace, it delivers a premium feel that disappears on the run.

Built-in Features
Minimalist Design, Maximum Comfort
Every detail serves a purpose—from the seamless heat-bonded hems that prevent chafing to the structured, sweat-wicking fabric that manages moisture and keeps the shirt light even when wet.

Feel & Function
Performance You Can Feel
- Feel: Ultra-Light, Soft, Cool on Skin
- Fabric: 86% Polyester / 14% Elastane
- Finish: Heat-Bonded Sleeves & Hem for a Clean Cut
- Fit: Relaxed, Bounce-Free
- Function: Moisture Wicking, Quick-Drying, Hot-Weather Optimized

Venti Force
Drawing inspiration from Venti, the Roman god of winds, the Venti Force Line embodies the relentless drive to harness power and momentum. Designed for athletes who are seeking reliable performance gear, the Venti Force Line combines functionality and affordability without compromising quality.
Crafted with durable materials and thoughtful design, this line is built to handle the demands of triathlon and cycling, offering comfort and versatility in every stitch. At Mauna, we believe the winds of change are what propel us forward, and the Venti Force Line captures this spirit, giving athletes the confidence to embrace their journey and keep moving toward their goals.
More From This Line

Men's Venti Force Sierra Trisuit

Men's Venti Force Sierra Cycling Windbreaker

Men's Ourea Pro Sierra Cycling Jersey
