ESD Sweatshirt crew neck black, 300 gsm compact cotton, size L - A1-ESD

Goods-in areas, high-bay stores and air-conditioned test rooms create a practical gap in an EPA. People want a second layer, and what they reach for is usually a private hoodie that quietly takes the personal grounding path out of service. This sweatshirt fills that gap and stays part of the dissipative chain.

At 300 gsm the fabric has the weight of a proper sweat quality, but it is combed compact cotton rather than brushed synthetic pile. It releases far fewer fibres over open assemblies, and cotton builds up less odour across a long shift than polyester.

Black earns its place in electronics work. Flux spatter, solder paste residue, toner dust and grease stay visually quiet on a dark sweat fabric, and reactive dyeing holds the shade through many industrial laundry cycles.

Your benefits

• Conductive yarn across the fabric: The 4 % conductive yarn is woven through the whole surface, including rib collar, cuffs and waistband. Dissipation does not stop at the edge of the front panel.
• Measured 10⁵ to 10⁸ ohms: STFI determined surface resistance to DIN EN 61340-5-1:2016 in a test climate of 23 (+/-1) °C and 25 (+/-5) % relative humidity, so under dry conditions rather than comfortable ones.
• 300 gsm for cool areas: The fabric weight carries a shift through goods-in, storage and cooled measuring rooms without anyone pulling a non-dissipative jacket over the workwear.
• Compact cotton instead of fleece: 96 % cotton in compact yarn sheds far fewer fibres than brushed synthetics and stays fresher over an eight hour shift, which matters for a layer worn all day.
• Ring-spun yarn keeps its shape: Ring spinning holds the neckline and cuffs in shape after many wash cycles. A stretched collar is the most common reason a sweatshirt leaves service early.
• Reactive dyeing and mercerising: Reactively dyed, mercerised yarn keeps its depth of colour through industrial laundry, so a later repeat order in black still matches the first delivery on the shop floor.
• ESD logo on the left sleeve: The logo shows auditors and visitors at a glance that the garment is dissipative workwear and not a private black sweatshirt brought in from home.

Material and fabric

The base is compact cotton in ring-spun yarn, 96 % of the blend, with 4 % conductive yarn. Compact spinning binds in the protruding fibre ends, which gives a smoother, lower-linting surface than ordinary cotton yarn. At workstations with bare boards or optical assemblies that difference matters more than any other fabric property.

For the conductive share we use high-grade silver yarn in a process developed in house. The yarn runs through the full width of the fabric rather than sitting on it as a decorative stripe, which is why conductivity survives repeated washing and wear.

• 96 % cotton, 4 % conductive yarn
• fabric weight 300 gsm
• compact cotton yarn, ring-spun
• reactively dyed and mercerised
• low linting and low odour compared with synthetic fabrics

Construction in detail

Crew neck with a conductive ribbed collar and a colour-matched neck tape. The tape covers the shoulder seam and stops chafing at the neck, which becomes noticeable during overhead work at a control cabinet. Cuffs and waistband are made from the same conductive rib material.

The cuffs hold the sleeve at the wrist so it does not slide over the hand when reaching into a card rack or under a test adapter. The waistband keeps the body of the shirt down when the wearer bends over a bench. The ESD logo on the left sleeve identifies the garment on the floor.

• crew neck with conductive ribbed collar
• colour-matched neck tape
• conductive cuffs and conductive waistband
• ESD logo on the left sleeve
• optional chest pocket, side pockets or contrast trim

Lasting dissipation and wash resistance

Measured surface resistance falls between 10⁵ and 10⁸ ohms. The test was carried out by STFI to DIN EN 61340-5-1:2016 in a climate of 23 (+/-1) °C and 25 (+/-5) % relative humidity. That dry figure is the useful one, because winter air in many production halls sits in exactly this range and clothing charges up most under those conditions.

Since the conductive yarn is part of the weave and not a surface finish, it cannot be washed away. Conductivity remains after repeated washing and wear. That makes the sweatshirt suitable for circulation through a commercial laundry contract, not only for a domestic machine.

Fit and size range

Available from 3XS to 6XL, from the smallest regular size up to oversize. A whole shift can be dressed from one series without individual staff having to fall back on a different model or a different shade. Oversizes are made in the same construction and the same black shade.

Exact measurements per size are listed in the size chart, available as a PDF in the Downloads tab of this product page. For a first team order a sample piece in a middle size is worth the effort, because the sweatshirt is worn over a T-shirt and needs room across shoulder and armhole.

Why black in electronics

Black suits areas where something is always rubbing off. Flux at the soldering bench, cleaning agents in rework, toner in printer service, grease in mechanical assembly. On a dark sweat fabric none of that shows immediately, so the garment stays in service longer between laundry runs.

In mixed teams black also works as the base colour against which a second shade marks visitors, floaters or test personnel. Where that distinction needs to be more obvious on the floor, contrast trim combines well with embroidery on the sleeve or on the chest.

Technical data

Applications

• soldering and rework benches in cooler production halls
• goods-in and semiconductor stores with open shelving
• test and measurement stations in dry, air-conditioned rooms
• placement and assembly work as a second layer over the ESD T-shirt
• field service work and the outer zones ahead of a cleanroom
• training rooms and visitor areas inside an EPA

Care and service life

The sweatshirt is built for commercial industrial laundry. Ring-spun yarn and rib knit hold collar, cuffs and hem in shape through the cycle, and reactive dyeing keeps the shade even after many runs. Conductivity is retained over many wash cycles because the conductive yarn is woven in. The sewn-in care label is the binding source for washing method and temperature.

Finishing and custom versions

The sweatshirt is printable up to 160 °C and suitable for embroidery, with a sample print recommended beforehand. Contrast trim, a chest pocket and side pockets are available on request, as are colours outside the catalogue range. Ask us for a quotation covering your company logo and team marking.

Standards and testing

What is tested is the dissipative behaviour. STFI measured surface resistance to DIN EN 61340-5-1:2016 at 10⁵ to 10⁸ ohms in a climate of 23 (+/-1) °C and 25 (+/-5) % relative humidity. No testing or certification against further ESD standards has taken place. The sweatshirt belongs in an EPA concept as dissipative workwear, not as standalone protective equipment.