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Main page » Men » Functional underwear » Long sleeve tops » SIXS Functional combination STX R V2 - black carbon
SIXS Functional combination STX R V2 - black carbon
(Product No.: MC-F33272-999-XS/S)
The SIXS 4-Seasons Base Layer Suit guarantees excellent comfort and performance, no matter how intense your activity is. With its innovative Carbon Underwear Fabric®, the suit offers effective sweat management and thermal regulation. Reinforcements in the chafing zones ensure extra durability, while breathable zones quickly wick away moisture. The ergonomic, seamless fit guarantees optimal fit and freedom of movement. Additionally, the antibacterial effect prevents unpleasant odors, so you always stay fresh – no matter how long you wear it.
Technical Details:
- Breathable and quick-drying
- Antibacterial fiber for freshness
- Reinforcements in chafing zones
- Ergonomic, seamless fit
- Effective sweat management
- Ideal for intense physical activities
Composition:
- 74% Polypropylene
- 16% Polyamide
- 5% Elastane
- 5% Carbon Fiber
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SIXS Size Chart
Fit-und-Warm carries SIXS mainly for functional shirts/base layers and socks. SIXS uses product-specific size charts for base layers and emphasizes body height as a particularly important selection measurement.
Socks – Current Crew Socks
| EU | US Men | US Women | UK | Foot range |
|---|---|---|---|---|
| 35–38 | 3.5–6 | 5–7.5 | 2.5–5 | 23–26 cm |
| 39–42 | 7–8.5 | 8.5–10 | 5.5–9 | 26–28 cm |
| 43–46 | 9–12 | 10.5–14 | 9.5–11 | 28.5–30 cm |
| 47–49 | 13–14.5 | 14.5–16 | over 11.5 | over 30.5 cm |
Older / Alternative SIXS Sock Labelling I–III
| SIXS | EU | US Men | US Women | UK | Foot range |
|---|---|---|---|---|---|
| I | 36–39 | 4–6.5 | 5–7.5 | 3–5.5 | 23–26 cm |
| II | 40–43 | 7–9.5 | 8–10.5 | 6–9 | 26.5–28.5 cm |
| III | 44–47 | 10–13 | 11–14 | 9.5–12 | over 29 cm |
Base Layers / Functional Shirts
| Product family | Official SIXS sizing logic |
|---|---|
| 4 Seasons / Light BT / Warm CU | Use the size chart directly on the product. |
| Most important measurement | According to SIXS, body height is particularly important. |
| Between sizes | Choose according to body height and product-specific fit. |
A universal numerical apparel master chart is deliberately not built from third-party data because SIXS itself uses a specific size chart per product.
Assortment check: Fit-und-Warm SIXS brand page. Manufacturer sources: official SIXS/SIX2 Crew Sock product pages and size-guide guidance for base layers. Research checked on 20 August 2026.