Microfibre

Two-sided Fabric

Non-stretch

Moisture Control

Harāra Training Vest Prototype 003.1

Structured, high-airflow training vest engineered with an advanced dual-knit fabric to deliver maximum breathability, coverage, and comfort for middle- and long-distance runners training in warm and hot conditions.

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Free shipping within Vietnam for orders over $100

Global express shipping available

30 days exchange guarantee

Fit

This training vest is purposefully tailored for lean, lightweight, and ectomorphic long-distance body types. Overall fit is snug. The fit together with the semi-elastic fabric and knitting structure aims to keep the running vest close to the body for maximum comfort and protection.

Pay attention to the reference measurements of overall length and width under the armpit to ensure the shirt fits comfortable.

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Shipping information

At checkout, you can choose your preferred shipping option and view estimated delivery times.

All our shipments are tracked for your peace of mind. You will receive a shipping confirmation email with the carrier’s details and the tracking number.

Free returns

You may exchange your product for another item within 30 days of purchase.*

*Terms: Shipping fees apply. Valid only for full-priced items purchased directly from us through this website. Samples, promotional products, prizes, discounted items, and replacement items are not eligible. Please see our Return & Exchange Policy.

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Scoop neckline for maximum breathability and comfort

The 152gsm fabric features a unique dual-structure design: a supportive 0.45mm thick core layer provides shape retention and structure, while an integrated 0.14mm micro-thin vent-knit system promotes airflow across the entire vest

Ultra-closeup showcasing thread fibres and knitting structure

Heat bonded hems to minimise chaffing

Closeup of heat bonded shoulder element

Black light reflective HTV

Ultra-close-up showcasing the thread fibres and knitting structure.

All hems are heat-bonded to eliminate excess material, reduce overall weight, and minimise friction against the skin.

Close-up view of the heat-bonded hem construction.

Close-up view of the heat-bonded shoulder construction.

Made to support easy and long runs in warm to hot conditions, this innovative prototype vest is designed for middle- and long-distance runners training through the height of summer—where breathability matters more than weight, and coverage matters just as much as airflow. Whether you're pacing through dry heat, moving through stale air, or running under the midday sun, it’s built to help you stay cooler, longer.

Tested in conditions ranging from 20°C to 41°C¹, it performs across a range of environments: sunny or overcast, dry or humid, breezy or still. Its breathing-focused structure is optimised for low to moderate intensity training runs—where cooling efficiency counts, but output stays controlled. It’s not designed for threshold runs, intervals, races or other high-tempo efforts.

The 152gsm fabric features a unique dual-structure design: a supportive 0.45mm thick core layer provides shape retention and structure, while an integrated 0.14mm micro-thin vent-knit system promotes airflow across the entire vest. Though relatively heavy by our standards at 74 grams dry, 182 grams damp, and 220 grams wet2, this trade-off enables superior ventilation without clinging or revealing too much when soaked with sweat.

A 4-way stretch knit allows for natural movement, while heat-bonded hems and seams reduce bulk and friction.

Tailored in a custom turquoise tone (CIELAB 73.64, -31.83, 3.73) and QC-verified to under 2% deviation, the vest balances visibility with non-transparency—even when drenched. Light-reflective HTV labels on the front and back add visibility for early morning or late-evening road efforts.

The Harāra Prototype #003.1 vest is built to keep you covered, cool, and comfortable across long summer sessions.

No vent hole gimmicks. No afterthoughts. Just airflow, structure, and purpose.

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1 77°F to 106°F
2 Reference size M

Microfibre

Efficiently wicks sweat away from the skin and enhances moisture control, improves breathability, speeds drying, and maintains durability and shape over time.

Two-sided Fabric

Two-sided performance fabric actively manages moisture by wicking sweat outward and accelerating evaporation.

Non-stretch

Maintains shape and fit to ensure stable, non-shifting comfort whilst running.

Moisture Control

The fabric's inherent moisture control properties ensure cooling in various hot conditions, including extremely humid weather.

Race Type

Middle Distance (under 5km)

Long Distance (5–10km)

Half & Full Marathon (21–42km)

Ultramarathon (over 42km)

Terrain

Road

Track

Trail

Fabric

92% polyester, 8% elastane (spandex)

Care Instructions

Normal cycle machine washable up to 30°C / 86°F.
Do not bleach.
Do not tumble dry. Hang dry.
Do not iron.
Do not dry clean.

Metric (cm) / Imperial (in.)

Size

Dimension A

Dimension B

Dimension C

How to measure yourself

We recommend to measure one of your existing running vests and compare based on the chart above.

Use a flexible tape measure and measure the circumference on the level of your hip bone (greater trochanter). Stand with your feet together, feel your hip bone and place the tape measure at the top. Keep the tape parallel to the ground, and ensure it is snug but not constricting.

(1) Lay Flat: Place your running singlet flat on a hard surface, smoothing out wrinkles.

(2) Length: Measure from the top of the shoulder to the bottom hem. Compare this to Dimension A in the chart above.

(3) Width: Measure across the chest from armpit to armpit. Compare this to Dimension A in the chart above.

Alternatively, measure the following:
(1) Chest: Measure around the fullest part of your chest, typically just under the armpits, keeping the tape measure horizontal and snug but not tight. Compare this in the chart below.

(2) Waist (Natural Waistline): Measure around your natural waistline, usually just above the belly button, keeping the tape level and comfortable. Compare this in the chart below.

(3) Hips: If you like the vest to sit at mid-glute level (middle of the buttocks) as intended, measure the circumference of your full hips on the widest point of your hips/buttocks. This is often below the hip bones, around the fullest part of the seat. Alternatively, if you prefer your shirts to sit on the hips, then measure the circumference on the level of your hip bone (greater trochanter).

(3) Length: Measure from the highest point of your shoulder down to where you want the hem to fall (ideally, between your hip bone and mid-glute).

Metric (cm) / Imperial (in.)

Size

Chest

78–82

82–86

86–92

90–94

Waist

78–82

82–86

86–92

90–94

Hips

78–82

82–86

86–92

90–94

Length

65–67

67–69

69–71

71–73

Size	Chest (in)	Chest (cm)
XS	33-35	84-89
S	35-37	89-94
M	37-39	94-99
L	39-41	99-104
XL	41-43	104-109
XXL	43-45	109-114

Harāra Training Vest Prototype 003.1

Size: XL

How to measure yourself