A Retroreflectometer is used to check the performance of retroreflective tape. Every roll of tape is tested to ensure it meets and exceeds the standard requirements. The retroflectometer measures the coefficient of two rotating angles. EN ISO 20471 states the reading should not be below 330 (cd/lx.m2) however at Portwest they insist on a reading of 400 (cd/lx.m2) plus.
A spectrophotometer is used to check the chromaticity – “colour intensity” – of fabric. They use this to ensure every roll of fabric meets the requirements of EN ISO 20471 and RIS-3279-TOM.
RIS imposes a higher concentration for high visibility orange fabric for railway workers. This increases the conspicuous nature of the fabric and ensures that the rail worker is more visible.
Reflective tape must be at least 50mm wide. Bands of reflective tape must be positioned at least 50mm apart.
Reflective tape must be positioned 50mm or more from the end of sleeve or leg.
Reflective tape must encircle torso and/or limbs to be included in the calculation of the necessary square area of reflective tape. A gap (for fastening system or seam) in the band of reflective tape must be 50mm or less. The total amount of such gaps in every band must not exceed 100mm around the torso and 50mm around the sleeves and legs.
EN343 is the European standard that applies to garments worn in adverse weather conditions. This standard specifies requirements and test methods applicable to the materials and seams of protective clothing against the influence of precipitation (e.g. rain, snowflakes), fog, and ground humidity.
The pictogram to the left indicates that protection against rain is offered.
The standard provides for two performance parameters of which there are 4 levels with Class 4 offering the highest level of protection.
EN342 is the European standard that applies to garments worn in cold environments. This standard specifies requirements and test methods for the performance of clothing ensembles (i.e two-piece suits/coveralls) for protection against the effects of cold environments equal to or below -5°C.
There are three main parameters:
(Example to the left refers to the Portwest Hi-Vis Bomber Jacket (S463) test results)
The manikin test measures the amount of energy required to maintain warmth. This result is expressed in square metres Kelvin per Watt (m2K/W) this result can be used to estimate the maximum wear time based on the activity level of the wearer, the temperature of the environment and insulation value of the garment.
For example (see chart to the left):
A person wearing the Portwest Hi-Vis Bomber Jacket (S463) performing light activity can withstand -2°C for 8hrs and -18°C for 1hr. A person performing Medium activity can withstand -18°C for 8hrs and -36°C for 1hr.
Highest level of protection - required for any persons working on or near motorways, dual-carriage ways or airports. Must incorporate a minimum of 0.80m2 of background material and 0.20m2 of retroreflective materials. (4 metres of 5cm wide reflective tape)
Required for any persons working on or near A and B class roads, also for delivery drivers. Must incorporate a minimum of 0.50m2 of background material and 0.13m2 of retro-reflective material. (2.60 metres of 5cm wide reflective tape)
Minimum level of protection required for any persons working on a private road or to be used in conjunction with a higher classed garment. Must incorporate a minimum of 0.14m2 of background material and 0.10m2 of retroreflective material. (2 metres of 5cm wide reflective tape)
Face winter weather with confidence in the Portwest Hi-Vis Contrast Trouser - Lined in Yellow/Black. These trousers are specifically designed to protect the wearer in all weather conditions, offering visibility, warmth, and dryness even in challenging environments.
Key Features:
Compliance with Industry Standards:
Opt for the Portwest Hi-Vis Contrast Trouser - Lined in Yellow/Black to enjoy a combination of safety, comfort, and durability in your winter work attire.
Specifications are subject to change - See Terms & Conditions for more info
Portwest has been independently rated by Ecovadis for its environmental, social, and ethical performance and achieved a silver rating, meaning they are in the top 25% of globally rated companies.
The pillars taken into consideration include the environment, labour practices and human rights, ethics, and sustainable procurement.
This product conforms with essential health and safety requirements as set out in European Directives.
This symbol indicates UKCA marking in progress at time of print. All products placed on the UK market from January 2023 must be UKCA marked.
40+ UPF rated fabric to block 98% of UV rays.
A mobile phone pocket is included in this garment.
This garment features 5 pockets.
This features a half elastic waistband which allows for all-day comfort for the wearer.
This symbol indicates compliance with EN ISO 20471 after 50 washes (Minimum requirement under the EN norm is 5 washes).
This is an eco-conscious product made using certified recycled or sustainable fabrics or materials.
This garment is padded to trap the heat and increase warmth.
This garment is lined for added warmth and comfort.
EU Declaration of Conformity
