Founded by Steven Callens and Niels Vandecasteele, Sunday ( is the European number one for sustainable company fashion that people love to wear. Besides offering clients an all-in-one solution, covering creative and technical design through to manufacturing and delivery, Sunday also provides consultancy services, ranging from campaign design to campaign tracking. The company has its head office in Roeselare (Belgium) and partners with a production team in Poland.

Since its inception in 2015, Sunday has grown at a rapid pace. It currently has more than fifty employees working at its five sites in Belgium, the Netherlands, Germany, Ireland and Poland. Its client base includes such big names as Facebook, Google, Mastercard, Netflix, Salesforce and TikTok.

Robur Capital has acquired a 25% stake to support the growth and international expansion of the company.  

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