Product Overview
The Stormtech Sierra thermal jacket is a sophisticated piece of outerwear engineered for professionals who require high-performance thermal protection without the burden of excessive weight. It functions as an ideal layering piece for outdoor environments, providing a lightweight yet effective barrier against the cold. The jacket combines technical insulation with a clean, professional aesthetic that is suitable for both on-site work and client-facing roles.
Key Features
STORMTECH Thermal Shell insulation: This feather-free insulation provides efficient warmth retention by trapping air, ensuring you stay warm in cold conditions without a bulky silhouette.
Water-repellent finish: The Durable Water Repellent (DWR) coating allows moisture to bead and roll off the surface, keeping you dry during light rain and damp conditions.
Windproof outer shell: The high-performance fabric acts as a barrier against wind chill, maintaining your core temperature during outdoor tasks.
Internal full-length storm flap: This feature prevents wind and moisture from penetrating through the zip line, offering an extra layer of weather protection.
Adjustable hem and elasticised cuffs: These allow for a customisable fit, helping to lock in heat and prevent draughts from entering the garment.
Zipped handwarmer pockets: Secure storage for tools and essentials, while providing a protected space to keep hands warm during stationary periods.
Design & Performance
The Sierra jacket is constructed from 100% polyester pongee, a fabric chosen for its durability and smooth finish, which is complemented by a 100% polyester lining for comfort. The quilted design is not merely for style; it ensures the Thermal Shell insulation remains evenly distributed across the torso and arms, eliminating cold spots. Despite its lightweight fabric construction, the jacket is resilient enough for daily use in demanding environments. The inclusion of decoration access points demonstrates that this garment was designed from the outset with customisation in mind, allowing for high-quality branding without compromising the jacket's internal integrity.
Customisation: Print & Embroidery
This jacket is a superior canvas for professional branding. We recommend embroidery for a sophisticated, durable finish that complements the premium feel of the Stormtech brand. Embroidery is particularly effective for company logos and staff names, providing a textured, high-quality appearance. For larger, bold branding requirements, our high-precision printing techniques are also available. All customisation is performed by our expert team in Telford, where we have been perfecting our craft since 1976.
Use Cases
The Sierra thermal jacket is perfectly suited for site managers, surveyors, and tradespeople who move between vehicles, offices, and outdoor sites. Its lightweight profile makes it an excellent choice for active roles where freedom of movement is paramount, yet warmth cannot be sacrificed. It is also an ideal corporate garment for staff uniforms during the cooler months.
Why MyWorkwear
Since 1976, MyWorkwear has been a trusted partner for UK businesses. Based in Telford, our heritage is built on technical expertise and a commitment to quality. When you choose us, you are benefiting from nearly five decades of experience in garment customisation and a deep understanding of what makes workwear perform in the real world.
Practical Advice
This jacket is available in a broad size range from Small up to 5XL. For the most effective thermal performance, we suggest wearing this over a moisture-wicking base layer or a medium-weight sweatshirt. If you intend to wear heavy layers beneath the jacket, you may wish to consider the sizing measurements provided to ensure a comfortable fit across the chest and shoulders.
Caring for your product
To maintain the technical properties and longevity of your Sierra jacket, we recommend a cold machine wash on a gentle cycle with similar colours. Using cold water protects the synthetic fibres and ensures the insulation remains effective for longer.
It is vital to avoid the use of fabric softeners, as these can coat the technical outer shell and impede the breathability and water-repellent finish. Bleach should also be avoided, as it will degrade the polyester fabric and damage any custom embroidery or print.
The garment should be hung to dry. Do not tumble dry, as the heat can damage the Thermal Shell insulation and cause the fabric to shrink or lose its shape. For the same reason, do not iron the garment, particularly the decorated areas, and avoid dry cleaning, as the chemicals can be detrimental to the jacket's weatherproofing.
4.8
