Alsico, more than workwear

Everything in place for your safety and comfort

We are a proud family business operating all over the world. Our mission: to provide companies with quality, durable, industrially washable workwear. For every safety and comfort need we have the right garment on the rack. Moreover, our solutions are perfectly in line with the identity of the various wearers and unmistakably image-enhancing for your organization.

Our Vision

We design, manufacture and distribute quality work and protective clothing in a sustainable and well-considered manner.

Optimal customer service is our primary concern. We deliberately take care of the entire process with the client. From styling and creation of the models to production and follow-up by our customer service. Thanks to our own production workshops, we can guarantee a supply without interruptions.


Alsico attaches great importance to sustainable business. We define sustainability as a thorough impact management. We recognize that our activity has an impact on people as well as on the environment and so we aim to reduce the negative impact and create and increase a positive impact, wherever possible.

Accountability and transparency are central to our sustainability policy. That means: we want to be accountable for the products we make and how we make them. To ensure this accountability, we ensure transparency - about the origin of our raw materials and about the people involved in the production process.

Our strengths

Extensive product portfolio

We offer the right product portfolio per segment, at competitive prices.

Speedy delivery

We offer market-based delivery times thanks to Quick Response manufacturing and SAP.

High quality management

We work from a high quality management framework.

Certification and legislation

Quality we closely monitor and constantly improve.


We aim to save on raw materials (through our projects in circular economy)


We are part of a larger group.


Alsico's products comply with all European standards: from rainwear to protective clothing for activities such as welding or working with chemical fluids. Plus, our quality management system carries the ISO 9001 certificate: yet another quality assurance.

Discover all norms and certificates.
Go to to   download all certificates of conformity and user instructions .

  • ISO 9001:2015 certificate
    This certificate guarantees that the entirety of processes related to quality management complies with the ISO 9001 standard.
  • ISO 14001:2015 certificate
    Our environmental management system complies with the ISO 14001 standard.
  • Ecovadis Gold Status
    We are among the 5% best performing companies in terms of corporate social responsibility.
  • CO2-neutral
    Our production (including all transportation) is carbon neutral. We reduce our emissions through a 10-point program. Customers can offset their emissions.
85 years of sustainable solutions


Alsico’s Beginnings

It all started in 1934 when Leopold Aelvoet decided to start his own company for professional workwear.

Gaston Siau, the visionairy

The small workshop that manufacture the first of the emblematic blue overalls was taken over in 1947 by son-in-law Gaston Siau. He expanded the company to a European workwear specialist. Aelvoet and Siau Confection thus became ALSICO.

First overseas production

In the mid-1970s, Mr. Gaston Siau was the first to start production overseas.

The third generation takes great strides

Thanks to the vision and tireless work of the third generation - Bernard and Philippe Siau - Alsico grew to become a global player. 

Alsico Group with its fourth generation on board

In 2016, with Vincent and Gauthier Siau, the fourth generation joined the ranks.  

The focus is on people

Today, Alsico Group employs 7500 people and has consolidated sales of more than 250 million euros. With its 100 employees, Alsico nv, as the birthplace of the global group, still plays an important role in the continued development of the company.