Swivvy for industry and press

The system

Swivvy is a patented motion system for seating. The hinge sits inside the cushion and lets the seat tilt continuously in every direction around a fixed pivot. The result is the pelvic movement of sitting on a ball, on a seat that stays where it is.

A lever under the seat locks the hinge in its centre position. Pull it clockwise to lock, counterclockwise to release. The lock only engages when the seat is unweighted, so it can't be thrown by accident while someone is sitting.

Because the movement comes from a mechanical pivot and not from air or foam compression, it's the same on day one and after years of use. There's nothing to inflate, nothing that settles, nothing to replace.

The hinge is designed as a component, not as a chair. Swivvy Office is the first product built around it. The system is intended to go into other seating.

Cut-away of the Swivvy Office seat, showing the hinge and its red locking mechanism inside the cushion

Fact sheet

The Swivvy motion system

Type
Mechanical pivot module for integration into seating
Movement
Continuous multi-directional tilt around a fixed centre
Tilt range
22.5 degrees from centre in any direction
Lock
Mechanical, locks to centre, engages unweighted only
Module hinge size
Height 57 mm, diameter 9 cm
Module hinge weight
116 grams
Mounting
Hinge: Secured to internal plates with 8 × 5 mm diameter self-locking screws.System: Versatile mounting configuration, adaptable to application requirements.
Patent
RZC Holding B.V. (parent of Shifting Shapes B.V.). Dutch patent NL 2034876, granted December 2024 / International patent publication WO 2024/242554
Trademark
RZC Holding B.V. (parent of Shifting Shapes B.V.). EU trademark no. 019143513
Development
Initial filing of patent 2023, patent granted 2024, and production-ready 2026
Status
In production, integrated in Swivvy Office

Swivvy Office, first product on the system

Type
Active sitting stool with integrated motion system
Seat height
Classic 55 to 75 cm, Wheels 58 to 78 cm, Disc 54 to 74 cm, gas spring
Optional foot ring
Height adjustable
Max user weight
115 kg
Upholstery
Premium microvelour, fully vegan
Colours
Mist, Slate, Fjord, Dune
Stands
Classic (five-foot base), Wheels (five-foot base with weight-activated braking castors), Disc (weighted round base)
Dimensions
Classic width 55 cm, depth 55 cm, height range 55-75 cmWheels width 55 cm, depth 55 cm, height range 58-78 cmDisc width 40 cm, depth 40 cm, height range 54-74 cm
Weight
7-10 kg, depending on configuration
Designed
Netherlands
Manufactured
Ukraine
Price
From €399,95 incl. VAT, depending on configuration
Availability
First run of 100 complete, delivery window early Q4 2026

In development

Swivvy School
Cushion with integrated system for existing classroom chairs. Prototype, pilots this school year

Company

Company
Shifting Shapes B.V.
Founded
2023
Founder
Rowan Zwiers
Based
The Hague, Netherlands
Web
swivvyseat.com

From prototype to production

Swivvy joins Dutch Design Week 2026 as part of the collaborative showcase ‘Design meets Industry’, hosted by DDW x Designlink.

Introducing a family of active seating built around a patented motion system, Swivvy will be highlighting its featured product: the Swivvy Office, of which the first production run of one hundred units is complete.

Swivvy Office is an active sitting stool for the desk, the meeting room and the sit-stand setup. It's designed to look like furniture rather than equipment. Vegan microvelour in four colours, three base options, optional footring, height adjustable, designed in the Netherlands and manufactured in Ukraine.

Swivvy’s motion system does one thing: it lets a seat tilt continuously in every direction around a fixed pivot, and lock in the centre on demand. That gives the pelvic movement of sitting on a ball without the ball, on a seat that doesn't roll, deflate or take up floor space. It's a mechanical pivot, so the movement doesn't change over time.

The hinge was built as a component from the start. Further developments include Swivvy School, a cushion with the same mechanism that sits on existing classroom chairs. Beyond that, Shifting Shapes is open to collaborate with seating manufacturers and brands who want this mechanism in their own designs as well.

“Our novel system creates movement that feels natural and visually belongs in modern interiors,” says Rowan Zwiers, founder of Swivvy. “Rather than adding overly visible ergonomics onto furniture, we’ve integrated the motion directly into the design itself.”

The Swivvy Office is designed in the Netherlands and developed in collaboration with engineering partner Vendiboard in Ukraine. Its core hinge component is manufactured locally in Delft by MAFA Plastics. The underlying motion system was granted a Dutch patent in 2024 and is designed to be adaptable across multiple seating types.

The origins of Swivvy began with a personal challenge. Inventor Ira Mossou developed the first prototype to help her daughter find a more dynamic alternative to static sitting during long hours behind a computer. Her son, Rowan, took it on himself to develop things further from a handmade cushion into a patented movement system and ultimately the launch of Swivvy as a new Dutch seating brand.

Seven generations of the Swivvy hinge side by side, from the first plywood-and-webbing prototypes to the black production module
The family behind Swivvy, photographed with the first handmade cushion prototype, a red hinge module and a finished Swivvy Office

Photo: Anil Doekharan, 2026

Cut-away of the Swivvy Office seat, showing the hinge and its red locking mechanism inside the cushion

For manufacturers

The hinge was designed to be integrated, not sold as a chair. If you make seating, this is the part of the page for you. Technical specifications are in the fact sheet above.

Where it can go

Our motion system can be integrated in any seat or cushion that can accommodate 7 cm of additional height. Our thinner variety, currently under development, can be integrated in any seat or cushion that can accommodate 4 cm of additional height. Shaping of the module can be versatile.

Line drawings of the Swivvy module built into an office chair, a stool, a standing stool, a school chair and a rolled mat

Production status

Design complete, patented, first production run finished.

What we're open to

Licensing the mechanism. Co-development of new products around it. Supplying the module for integration into your designs. As a young and agile company, we have the flexibility to tailor the arrangement to fit.

What we're looking for

Manufacturers with an existing range and distribution who want a motion system they don't have to develop from scratch.

Get in touch

Rowan Zwiers, info@swivvyseat.com. During DDW we're at the Klokgebouw, hall B4, and happy to schedule time.

For press

Images

Product

JPG, 2987 × 4496 px
Swivvy Office in Mist on the Wheels stand, with foot ring.
JPG, 1920 × 1080 px
Swivvy Office on the Wheels stand (left) and the Disc stand (right).
JPG, 3000 × 2941 px
Three seats built on the Swivvy hinge: a Swivvy School cushion on a classroom chair, an orange Swivvy School prototype stool, and a Swivvy Office stool.
PNG, 4000 × 4000 px
Swivvy Office in Fjord on the Classic stand with foot ring. Transparent background.
PNG, 4000 × 4000 px
Swivvy Office in Mist on the Disc stand with foot ring. Transparent background.
PNG, 4000 × 4000 px
Detail of the Mist microvelour cushion. Transparent background.
PNG, 4000 × 4000 px
Underside of the cushion, with the lever that locks the hinge in its centre position. Transparent background.
JPG, 5504 × 3072 px
Swivvy Office in Mist in a home interior.
JPG, 1386 × 972 px
Swivvy Office in Mist at a sit-stand desk in a home office.
Product images on Google Drive

Mechanism

PNG, 4000 × 4000 px
Cut-away of the Swivvy Office seat, showing the hinge and its red locking mechanism inside the cushion. Transparent background.
JPG, 1435 × 1096 px
Cut-away of an earlier generation of the Swivvy motion system: the hinge between two mounting plates.
JPG, 1359 × 1158 px
Exploded view of an earlier generation of the Swivvy motion system: mounting plates, hinge, lock lever and base plate.
JPG, 1920 × 1301 px
Seven generations of the Swivvy hinge, from the first plywood-and-webbing prototypes to the black production module.
Mechanism images on Google Drive

Story

JPG, 6000 × 4000 px
The family behind Swivvy: inventor Ira Mossou with her first handmade prototype, her daughter Felia on the Swivvy Office, and founder Rowan Zwiers with the production hinge. Photo: Anil Doekharan, 2026.
JPG, 1449 × 1085 px
The injection mould for the Swivvy hinge housing, open in the moulding machine.
Story images on Google Drive

Video

Transparent render of the hinge in motion. MP4 (H.264), 14 seconds, 1920 × 1080 px. Video on Google Drive

Text

The story above can be used in full or in part. The fact sheet is current as of 10 September 2026.

Quote

“Our novel system creates movement that feels natural and visually belongs in modern interiors,” says Rowan Zwiers, founder of Swivvy. “Rather than adding overly visible ergonomics onto furniture, we’ve integrated the motion directly into the design itself.”

Usage

Images and video are free to use for editorial coverage of Swivvy, with credit to Swivvy. Please don't alter or crop the cutaway and hinge visuals.

Press contact

Rowan Zwiers, info@swivvyseat.com, +31 6 1832 3664. Answered daily during DDW.

Contact

Shifting Shapes B.V.Valkenboslaan 80, 2563 CN Den Haaginfo@swivvyseat.com

Manufacturers and licensing: Rowan Zwiers, info@swivvyseat.com

Press: Rowan Zwiers, info@swivvyseat.com