


What Our Clients Are Saying
Maria Grom02/09/2025 Lovely and welcoming studio with great energy 🤍 Classez are well-structured and always leave me feeling stronger and more balanced. Nikki and the team creates a really positive atmosphere that makes you look forward to every session (and remember it long after as your booty is really burning:) Highly recommend! tara verschoor26/07/2025 Ik kom inmiddels al een halfjaar bij The Pilates Concept en elke les is weer uitdagend! Inmiddels heb ik denk we elke instructrice gehad en ze zijn stuk voor stuk behulpzaam en duidelijk. Je kan zelf je niveau kiezen en er is altijd een fijne sfeer. Als iets even niet lukt word er niet geoordeeld, maar goed geholpen. M’n nieuwe favoriete hobby :) Mary Bello Ruiz16/07/2025 I went for a sound bath session with Hélène and I loved it. The wooden floor makes the vibration even more intense. I’ll definitely come back to try a pilates class as well. Lieke Kamp18/04/2025 Esther is a fantastic Pilates instructor! She has a great eye for detail and immediately sees where you can improve. I really appreciate how she adjusts the difficulty of the exercises to match your level — challenging but never overwhelming. On top of that, the location of The Pilates Concept is beautiful and adds to the focused atmosphere of the sessions. Yolanda Jak-de Jong02/04/2025 Ontzettende fijne teacher. Ze luistert goed en legt goed uit. Heeft alle geduld. Ik ben ontzettend blij met Nikki. Daphne Schipper25/02/2025 Wat een heerlijke, goede Pilates lessen. Zowel de essentials als sculpt! Tot nu toe les gehad van Nikki, Isabella en Esther. Alledrie zeer kundig en enthousiast met ook persoonlijke aandacht en gerichte correcties. Daarnaast vind ik ook de locatie heel fijn, goede sfeer! Na 5 jaar Crossfit, ben ik nu volledig overgestapt naar Pilates. Een verademing en enorme aanrader om Pilates hier te volgen! Vanessa Gomes25/12/2024 Great experience 👍. NIikki is very professional and for sure I am coming back! Melinda A.18/12/2024 Nikki is een vrolijke, ervaren en een enthousiaste pilates lerares. Haar lessen bestaan uit veel verschillende oefeningen en de lessen zijn elke keer weer uitdagend met veel variatie. Mijn lichaam is sterker en flexibeler geworden.Nikki, bedankt voor de fijne (reformer) lessen en bedankt dat je sporten/bewegen weer leuk maakt! Lara Manqui18/12/2024 Nikki is the best. So attentive and clear in her instructions. I love her classes, and will follow her to her new place for sure ☺️🙏🏼 Katherine Lofquist18/12/2024 Wonderful, extremely knowledgeable instructor. I highly recommend Nicki for all levels of reformer and mat Pilates!
Reformer Pilates
The Pilates Concept offers expert instruction by qualified and certfied instructors with state-of-the-art high end reformer machines to deliver a dynamic full-body workout that builds strength, flexibility, and balance. With the Reformer machine using spring-based resistance, each session challenges your core, tones muscles, and improves posture. Suitable for all levels, and divided with 3 different class categories, The Pilates Concept is the fast, effective way to achieve lasting results.
Group mat classes
We stand for Quality, Alignment and results while having fun! We prioritize personalized attention and ample time for your progress. We offer 3 types of Pilates class categories like; Foundations, Essentials, Sculpt as well as Rest & Restore classes like Restorative Yoga and Sound Baths. Our classes are mostly taught in English unless the teacher also speaks Dutch and unless it’s stated otherwise.
Private or Duo Reformer
Avoid busy crowds and get personalized attention. What to Expect?
Expert guidance by our qualified and certified Pilates instructors | Exercises tailored to your needs | Learn proper technique, improve your posture, strength and flexibility | Avoid busy crowds and classes | Pilates Reformer session using high quality equipment | Improve your skills with undivided attention.
Reach out to us via our contact form to request a private or duo reformer session.
On Demand library
Luxury and freedom with Online Pilates anytime, anywhere. Offering a variety of workouts, with different class categories a weekly schedule updated every month. And a special ‘on the go Pilates series’ for when you’re on Holiday or traveling.
Stay consistent with on demand Pilates — book results!
Discover Us
The Pilates Concept – Haarlem’s boutique studio for expert-led Pilates and rest & restore sessions that transforms body and mind. Whether you’re new to this type of movement or stillness, or looking to deepen your practice, we offer dynamic mat and reformer classes designed to build strength, improve posture, and boost flexibility.
With a focus on personal attention, fun, and top-quality instruction, The Pilates Concept is your destination for mindful movement and lasting results. Discover the power of Pilates & More —right here in Haarlem.
Transform your practice, transform your life!
Book now via our own app.

The Pilates Concept – Master Your Movement, Elevate Your Life.
About
At The Pilates Concept, we embrace Pilates as a holistic journey to strengthen, lengthen, and balance your body, mind, and soul. It’s more than just a “strong core” or “perfect posture”—it’s about quality, connection, and transformation. We go beyond just movement!
At TPC, we also host wellbeing events that align with a vision of holistic wellness. From mental health to physical vitality, from beauty to spirituality, and from active engagement to total relaxation, we create spaces for you to nurture every aspect of your wellbeing.
To complete your Holistic Fitness cycle we offer different class categories and styles where you can expect a contemporary fun and dynamic approach to traditional Pilates exercises and to Rest & Restore with Restorative Yoga and Sound Baths.
With classes guided by highly qualified, certified instructors, including Nikki, who’s globally certified in STOTT Pilates (Reformer & Mat), you’re in the best hands to elevate your Pilates practice, Mind Body connection and embrace a lifestyle of balance and vitality.
