Knox Mia Dual Active Base Layer Top | Women's | Grey | 69604
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Size chart Knox Base Layer Women
| Women's UK sizes | International size | Bust (inch) | Bust (cm) | Waist (inch) | Waist (cm) | Hip (inch) | Hip (cm) |
|---|---|---|---|---|---|---|---|
| 8 | XS | 33 | 83 | 25 | 64 | 35.5 | 90 |
| 10 | S | 35 | 87 | 27 | 69 | 37.5 | 95 |
| 12 | M | 37 | 92 | 29 | 74 | 39.5 | 100 |
| 14 | L | 39 | 97 | 31 | 79 | 41.5 | 105 |
| 16 | XL | 41 | 102 | 33 | 84 | 43.5 | 110 |
| 18 | 2XL | 43 | 107 | 35 | 89 | 45.5 | 115 |
| 20 | 3XL | 45 | 112 | 37 | 94 | 47.5 | 120 |
- Worldwide shipping
- Genuine parts & verified quality
- Personal email support
- 14-day returns — in stock ships within 24h
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We ship with DHL and FedEx — express on request. If an item is in stock, express delivery can often go out within 1 business day. Standard delivery takes about 2–5 business days domestically and usually around a week worldwide. Please check the available shipping options and delivery times in your cart, as we offer several carriers depending on the country.
Returns must be registered in advance by email and are possible in line with our cancellation policy (14-day return request + 14-day return window after approval). Please note: unregistered returns are not accepted. You'll find all details on conditions, exceptions and refunds in our cancellation policy.
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When lap times matter and conditions change fast, the layer closest to your skin decides whether you stay focused or start fighting discomfort. The Knox Mia Dual Active base layer top is engineered specifically for female riders who demand race-level moisture management and all-day wearability — from the first warm-up lap to the long ride home.
Key Features
- HYDROCOOL® technology pulls moisture away from the skin rapidly, keeping you dry whether you are pushing hard on track or cruising on a touring run
- SILVERPLUS® antibacterial treatment inhibits odour-causing bacteria, so the top stays fresh across extended sessions and multi-day trips
- Fast-drying polyester functional-fibre fabric recovers quickly between stints — no cold, clammy feeling on the next ride out
- Anatomically shaped women's cut follows the body's contours under leathers or textile suits without bunching or riding up
- Flatlock seam construction eliminates pressure points where armour and straps bear down during longer stints
- Year-round dual-active fabric regulates temperature in both summer heat and cool-weather conditions
Track-Proven Performance
On the racetrack, core body temperature and moisture control directly affect reaction times and rider confidence. The Mia Dual Active uses a specialised melange-weave polyester blended with functional fibre to achieve what single-layer cotton never can: active heat regulation in both directions. HYDROCOOL® accelerates sweat transport to the outer face of the fabric, where it evaporates before it can chill you between corners. The result is a stable microclimate against the skin through the full duration of a track day.
Material Technology
The Mia's fabric combines two independently developed finishing technologies into one lightweight top.
- HYDROCOOL® — rapid moisture transport to the outer layer for instant evaporation
- SILVERPLUS® — permanent antibacterial silver-ion finishing woven into the fibre, not a surface coating that washes out
- Highly breathable construction prevents heat build-up under a race suit or heavy jacket
- Quick-dry properties mean the top is ready for the next ride without a long drying cycle
Fit and Comfort for Female Riders
Knox developed the Mia cut exclusively around female anatomy. The close, sport-specific fit holds the fabric in the correct position so seams never migrate towards abrasion zones. Freedom of movement is uncompromised — reaching for clip-ons or leaning into a corner requires no accommodation for a loose or shifting layer. The soft melange fabric sits gently against skin without irritation, and the streamlined profile means pulling leathers over the top is effortless.
Ergonomics and Everyday Usability
- Sport-close fit that stays put under full riding kit all day
- Streamlined profile makes donning and removing motorcycle clothing quick and easy
- Comfortable during extended rides — no chafing, no overheating, no cold spots
- Machine washable and easy care — practical for regular use
Intended Use
- Track and circuit riding
- Sporty road riding
- Touring
- Year-round use — summer and winter
Care Instructions
- Machine washable
- Fast drying
- Easy care
Specifications
| Specification | Detail |
|---|---|
| Brand | Knox |
| Material | Polyester / functional fibre with HYDROCOOL® & SILVERPLUS® |
| Properties | Breathable, fast-drying, antibacterial |
| Fit | Sport / close-to-body |
| Intended use | Year-round (summer & winter) |
| Brand | Knox |
|---|---|
| Material | Polyester / functional fibre with HYDROCOOL® & SILVERPLUS® |
| Properties | Breathable, fast-drying, antibacterial |
| Fit | Sport / close-to-body |
| Intended use | Year-round (summer & winter) |
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// Knox
Knox Mia Dual Active Base Layer Top | Women's | Grey | 69604

Tech specs
- Brand
- Knox
- Material
- Polyester / functional fibre with HYDROCOOL® & SILVERPLUS®
- Properties
- Breathable, fast-drying, antibacterial
- Fit
- Sport / close-to-body
- Intended use
- Year-round (summer & winter)
- Worldwide shipping
- Genuine parts & verified quality
- 14-day returns — in stock ships within 24h
- Personal email support
// Support
Frequently asked questions
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