Portwest B123 Insulated Thermal T‑Shirt Long Sleeve Navy 4X‑Large

This insulated thermal T-shirt from Portwest offers reliable warmth while keeping a comfortable fit for all-day wear in cooler conditions. Designed for layering, it provides essential thermal protection without bulk, making it a practical addition to workwear wardrobes.

Key Points

The Portwest B123 is a long sleeve top that blends warmth with everyday practicality. It features a round neck, a comfortable cut and a navy finish that pairs with a wide range of work attire. The fabric is a balanced blend of 50% polyester and 50% cotton, which helps retain heat while remaining breathable. Available in a broad size range up to 5XL and in multiple corporate colours, it suits teams of varying sizes and branding requirements.

Technical Specifications

• Name: Portwest B123 Insulated Thermal T-Shirt Long Sleeve Navy 4X-Large
• Fabric outer: 50% polyester, 50% cotton
• Colour options: blue sky, white, grey, navy, black
• Sizes available: 4XL, 5XL, L, M, S, XL, XS, XXL, XXXL
• Care: wash at a maximum of 40°C on a gentle cycle, do not bleach, do not tumble dry, line dry, iron up to 150°C, do not dry clean

Usage Recommendations

This shirt is best used as a mid layer in cool environments, offering solid insulation without restricting movement. For maintenance, follow the care instructions to preserve fabric softness and size stability. If you are choosing a size for layering over base garments, consider selecting a range that allows comfortable movement around the shoulders and chest.