ESD Zip Sweat Jacket cobalt blue, 300 g/m² compact cotton, size XL - A1-ESD

In a hall where production, maintenance, quality assurance and external technicians work side by side, colour saves questions. Cobalt blue does that job better than navy, because it still reads as its own shade from ten metres away instead of blending into standard dark workwear.

The rest is craft. 300 g/m² of compact cotton keeps operators warm at air-conditioned test benches, the zip runs the full length to the chin, and rib collar, cuffs and hem band are knitted from conductive yarn. The jacket stays part of the dissipative system rather than becoming an insulating panel across the chest.

Stock is held in our own warehouse and shipped from there in twelve sizes from 3XS to 6XL, with embroidery for a department or company mark available on request.

Your benefits

• A marker colour that beats navy: The strong cobalt shade stays identifiable under hall lighting, so shift leaders, floaters and maintenance staff can be told apart on sight rather than by badge.
• Conductive closures: Rib collar, cuffs and hem band use the same conductive yarn as the body, so no isolated zone is left at the neck, the wrist or the hip.
• 10⁵ to 10⁸ ohms measured: STFI determined the surface resistance at 23 °C and 25 % relative humidity, the dry indoor climate in which charge separation on textiles is at its strongest.
• Reactive dyeing keeps the shade: Strong colours are the first to suffer in industrial laundering. Reactive dyeing bonds the colour into the fibre, so cobalt blue still works as a marker after many cycles.
• Two side pockets: Badge, test record or handheld scanner have somewhere to go, and nothing drops out of a chest pocket over an assembly on the bench.
• Ring-spun and dimensionally stable: Ring spinning holds the jacket in shape. Cuffs and hem stay close enough that a sleeve does not slide over the hand when reaching into a shelf.
• 300 g/m² for cool areas: Sweat weight covers stores, goods-in and air-conditioned test rooms without private jackets or jumpers being carried into the EPA.

Material and fabric

96 % cotton and 4 % conductive yarn make up a knit of 300 g/m². Compact cotton yarn binds protruding fibre ends into the thread, which keeps the fabric low in lint, and in a plant with open assemblies every fibre that does not settle on a connector counts. Cotton also brings a lower tendency to self-charging and odour build-up than synthetic fabrics do.

Mercerised and reactive dyed, the fabric gains a soft hand and a smooth surface on which the cobalt blue sits evenly. Ring spinning is what keeps the jacket in proportion, even when it runs in a laundry pool with a fixed rotation. At 300 g/m² the weight is high enough to replace a private jumper and low enough to work in over a bench all day.

• 96 % cotton, 4 % conductive yarn
• Fabric weight 300 g/m²
• Low-lint compact cotton yarn
• Reactive dyed, mercerised
• Ring-spun for dimensional stability

Dissipation that stays through the laundry pool

The conductive yarn is knitted in rather than applied on top. High-grade silver yarn is processed in a method of our own. Conductivity is retained through repeated washing and wear, which is the difference between a seasonal purchase and workwear that stays in service for years.

The evidence is a test for dissipation and surface resistance to DIN EN 61340-5-1:2016. STFI measured 10⁵ to 10⁸ ohms at 23 (+/-1) °C and 25 (+/-5) % relative humidity. That places the fabric in the dissipative range an EPA concept expects from personnel clothing.

Construction in detail

The full-length zip up to the chin turns the jacket into an adjustable part of the outfit. Anyone moving from a cool store to a warm soldering bench simply opens it. The rib structure at collar, cuffs and hem holds its shape and sits close enough not to catch on a fixture during assembly work. Two side pockets and the ESD logo on the left sleeve complete the specification.

• Full-length zip up to the chin
• Conductive rib collar
• Conductive cuffs and conductive hem band
• Two side pockets
• ESD logo on the left sleeve

Cobalt blue as a marker colour

Colour coding only works when the colours genuinely differ. Cobalt blue stands clearly apart from black, navy and white, and it is typically assigned to maintenance, quality assurance or floating staff. In terms of soiling the shade sits between the extremes. It is dark enough that an oil mark does not become a talking point, and light enough that heavy soiling is noticed and the jacket goes into the wash in good time.

Fit and size range

Twelve sizes from 3XS to 6XL are available, so a colour-coded team can be fitted out completely and consistently. The full measurement chart is provided as a PDF in the Downloads tab of this page and can be circulated to the teams before a collective order is placed.

Technical data

Applications

• Maintenance and technical service inside the EPA
• Quality assurance covering several production areas
• Shift leaders and floating staff in mixed halls
• Goods-in, picking and board stores
• Training sessions and escorted plant tours

Care and service life

The jacket is suitable for industrial laundering. Ring-spun yarn and compact cotton keep the cut and the cuffs in shape over many cycles, reactive dyeing holds the cobalt shade, and conductivity is retained over many wash cycles. Temperature and wash programme are governed solely by the care label sewn into the garment.

Finishing and custom versions

For colour-coded teams, lettering is a useful addition. Embroidery and printing up to 160 °C are both available and a sample print in advance is recommended. A contrast version, an added chest pocket and colours outside the catalogue range are arranged on request. Ask us for a quotation.

Standards and testing

The basis is a successful test for dissipation and surface resistance to DIN EN 61340-5-1:2016 carried out by STFI. The measured range is 10⁵ to 10⁸ ohms, determined at 23 (+/-1) °C and 25 (+/-5) % relative humidity. No certification against further ESD standards exists for this article.