Product Details
Act Running Men's BioFlex Underlayer
With a discreet opening at the left wrist, the Act Running Men's BioFlex Underlayer provides easy access to your sports watch, making it simple to monitor performance without interrupting your run. Reflective logos are strategically positioned to improve visibility during low-light and night-time outings, while the plant-based BioFlex™ nylon is made from castor beans, a naturally growing renewable resource. With a measured carbon footprint of 4.46kg of CO₂ – 17% less than a standard running T-shirt – this technical running base layer combines warmth, comfort and practical performance with a more considered approach to materials.
Features
- Technical base layer designed to keep you warm
- 3D design to prevent chafing
- Watch opening
- Reflective logos
- Plant-based nylon
- BioFlex™ nylon is made from castor beans, a naturally growing renewable resource.
- 4,46kg of CO2 emitted (17% less than a standard running T-shirt)
Specifications
- Discipline Compatibility
- Run
- Gender
- Men's
- Primary Activity
- Running
- Visibility Details
- none
- Product code
- 2052276 / 54497960198490
Size Guide
| Size | S | M | L | XL |
|---|---|---|---|---|
| A - Chest Width (cm) | 50.5 | 53.5 | 56.5 | 59.5 |
| B - Length (cm) | 68.5 | 71 | 73.5 | 76 |
| C - Hem (cm) | 48 | 51 | 54 | 57 |

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Shipping & Returns
Free UK delivery on orders over £50. Orders are dispatched within 1-2 working days and typically arrive 1-2 working days later.
Return unused items in their original packaging within 30 days of delivery. Return postage is £3.50.
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