Description
The Portwest B123 long-sleeved thermal T-shirt is a base layer that retains heat in cold working conditions. The shirt is made from a 50% polyester and 50% cotton blend, weighs 200 g/m², and complies with EN 14058 Class 2. It is suitable for anyone working in cold conditions who needs a reliable, comfortable insulating layer under workwear.
For what type of work or industry is the Portwest B123 long-sleeved thermal T-shirt suitable?
The B123 long-sleeved thermal T-shirt is suitable for outdoor work and other work situations where low temperatures are a factor, such as in construction, logistics, warehousing, and agriculture.
The shirt is designed as a base layer to be worn directly against the skin under workwear or a mid-layer. The polyester-cotton blend combines the moisture-regulating properties of polyester with the comfort of cotton, ensuring that the shirt remains comfortable even during prolonged wear.
What does EN 14058 Class 2 mean for this Portwest thermal T-shirt, and when should you choose this model?
EN 14058 is the European standard for clothing that provides protection against cold environments. Class 2 indicates that the garment has a thermal resistance of 0.137 m²·K/W, which corresponds to a Clo value of 0.9. This means it provides a measurable level of insulation suitable for moderately cold conditions.
Choose this model if you need a lightweight, comfortable base layer that provides certified thermal insulation without adding excessive bulk under your outer layers. Unlike a standard, non-certified thermal shirt, the B123 provides proven protection that meets the standard.
The shirt can be washed at a maximum of 40°C and is suitable for line drying, making it easy to care for in everyday use.
Material and care:
- Outer material: 50% polyester, 50% cotton (200 g/m²)
Washing instructions: Maximum wash temperature 40°C, mild process. Do not bleach. Do not tumble dry. Line dry. Iron at a maximum of 150°C. Do not dry clean.