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Become Physically
and Mentally
Stronger
Self-defense, strength and mental resilience for adults and children. Start at any level.
More than Self-Defense
Fightless combineert techniek, kracht, conditie en mentale weerbaarheid in een duidelijke opbouw. We trainen vanuit realistische situaties — altijd met begeleiding, altijd op jouw niveau.
Je leert niet agressief te worden. Je leert helder denken en doelgericht handelen — ook onder druk.
Elke sessie bouwt voort op je vorige les. Je groeit zichtbaar — en voelt dat ook.
Our Classes
Adults
16+ years
Gestructureerde training gericht op zelfverdediging, kracht en mentale weerbaarheid. Techniek en conditie worden samen opgebouwd — les voor les.
- Realistic techniques
- Strength and conditioning
- Mental preparation
Children
8–16 years
Kinderen leren zichzelf verdedigen, grenzen stellen en zelfverzekerd optreden. Met duidelijke structuur en persoonlijke begeleiding. Dinsdag en donderdag van 19:30 tot 20:30.
- Duidelijke structuur en opbouw
- Zelfverzekerd worden en grenzen stellen
- Vertrouwde omgeving, duidelijke structuur
How It Works
Come train
Sportswear and water. Equipment is available.
Feel it
Experience the training and meet your fellow fighters
Choose your plan
Monthly or annual membership
Training Schedule
Fixed training times on Tuesday and Thursday for adults and children. All levels welcome.
Adults 16+
- Tuesday: 20:30 - 21:30
- Thursday: 20:30 - 21:30
Children 8–16
- Tuesday: 19:30 – 20:30
- Thursday: 19:30 – 20:30
Persoonlijke aandacht
Privéles
Individuele of duo-training op jouw niveau en tempo — op afspraak.
Next class — Adults
Tuesday 20:30
Next class — Children
Tuesday 19:30
Pricing
Begin gratis of stap direct in met 3 proeflessen. Klaar voor een lidmaatschap? Kies het plan dat bij jouw ritme past.
Introduction
Free Trial Class
Just come and see — no subscription
€0
Starter
3 Trial Classes
Perfect start, no subscription
€19,99
Want to compare all memberships? View the full overview → — inclusief jaarcontracten en gezinskorting.
Sport voor elk kind, ongeacht het budget
Financieel wat krap? Via het Jeugdfonds Sport & Cultuur kunnen kinderen tot 18 jaar toch sporten. Wij helpen je graag verder — neem gerust contact op.
Our Trainers
Simon Willems
Founder & Trainer
Zelfverdediging, Krav Maga, Mentale Weerbaarheid
experience ervaring
Simon Willems is the founder of Fightless and has been training in self-defense and martial arts for over 10 years. What started as Defensemonkees grew into a clear mission: making people physically and mentally stronger.
His style is characterized by calm, structure and direct communication. No macho behavior, no aggression — but control, composure and self-confidence. Simon believes that real strength begins with self-mastery.
His vision: Confidence through calm. Power through presence. Growth through self-mastery.
Joey Lee
Trainer
Zelfverdediging, Krav Maga, Jeugdtraining
experience ervaring
Joey is an instructor at Fightless and brings energy, sharpness and commitment to the mat. With a background in martial arts and entrepreneurship, he knows how to combine discipline with accessibility.
He creates a safe training environment where participants are challenged to step just outside their comfort zone — without crossing boundaries.
Joey believes self-defense is not about fighting, but about awareness, timing and making the right choices under pressure.
Book your Trial Class
Get in Touch
Address
Celestastraat 26, 6217 XJ Maastricht
Frequently asked questions
Everything you want to know about self-defense at Fightless
Violence in the Netherlands: the numbers you need to know
Download our free infographic with the latest statistics on violence, escalation and resilience in the Netherlands. Based on CBS and WODC research.