MÜM™ Active Seating by PS Furniture — Rebel Against Boring, Rigid Seating

Rebel Against Boring, Rigid Seating
MÜM™ Active Seating by PS Furniture pairs the benefits of active sitting with the warmth and visual appeal of genuine furniture.
Active seating should not have to look like a plastic wobble stool, a neon balance ball, or a piece of exercise equipment misplaced in an otherwise considered room. MÜM™ takes a more refined approach. Its Perch Stool encourages micro-movement, an engaged core, and better posture while using tailored upholstery, layered memory foam, wood bases, and a secure leather handle to create a product that belongs in a professional interior.
Why MÜM™ fits the slogan
“Rebel Against Boring, Rigid Seating” is a direct description of what MÜM™ changes. The stool gives the sitter room to move rather than locking the body into one fixed position. Its Rock base promotes healthy body motion, while the Roll base makes repositioning easy across a range of surfaces. Even the Flat base offers an active-seating alternative without introducing visible instability into the room.
That movement is balanced by a furniture-minded construction. Layered memory foam provides softness for extended seating, and the upholstered top can be specified in fabric, vinyl, or customer-owned material. The result is active seating with considered proportions, not a novelty object competing with the rest of the space.
Movement with a practical purpose
MÜM™ supports the small, natural adjustments that can make sitting feel less static. Rock base styles allow the body to shift and respond. Roll base styles support easy mobility. Tall versions are designed for sit/stand desks and counters, with a slight inward kick that gives the feet a more comfortable position.
Three base heights and three base styles make the product adaptable to different work surfaces and settings:
- Short: available in Flat, Rock, and Roll versions, with heights from 18.125 to 19 inches.
- Mid: available in Flat, Rock, and Roll versions, with heights from 20.125 to 21 inches.
- Tall: available in Flat and Rock versions, with heights of 23 and 25 inches for higher work surfaces.
Every configuration has a base diameter of 16.7 inches, giving MÜM™ a compact footprint for rooms that need flexible seating without visual or physical clutter.
Designed for more than one kind of room
At a desk, MÜM™ can provide a more active alternative to a conventional task chair for short work sessions, touchdown areas, or changing positions throughout the day. At a sit/stand desk or counter, the Tall base offers a perch-height option that supports the rhythm between sitting and standing.
In collaborative spaces, training rooms, and multi-purpose interiors, the stool is easy to move using its leather handle. A lightweight construction makes reconfiguration practical, while the range of base styles lets designers choose between stability, motion, and mobility according to the needs of the room.
MÜM™ also suits cafés, event spaces, healthcare environments, and residential settings where furniture needs to perform without looking institutional. A Short version can sit near a low coffee table, while a coordinated group of upholstered stools can add flexible perch seating to a lounge or waiting area.
Materials that make active seating feel like furniture
PS Furniture gives MÜM™ a broad finish palette rather than treating upholstery as an afterthought. Grade 1 fabric options include Black, Gray, Yellow, Turquoise, and Burgundy. Grade 2 Vision Fabrics Midship vinyl offers an easy-to-clean, sanitize-friendly surface in colors including Royal Blue, Azure, Hunter Green, Almond, Dark Gray, Black, Brown, and Red. Grade 3 Knoll Delite options include Catalina, Turquoise Green, Cinder, Slate, Charcoal, Tobacco, and Orange.
The handle is available in seven Brayton Copenhagen leather colors, including Ultramarine, Butterscotch, Dark Chocolate, Black, Dove, Cashmere, and Ladybug. Light, dark, or black wood bases allow the stool to coordinate with a room’s existing palette. Customer’s Own Material is also available for projects with specific textile requirements.
Who should specify MÜM™ Active Seating?
MÜM™ is a strong fit for designers, dealers, workplace planners, educators, healthcare specifiers, and facility teams looking for movement-friendly seating that still meets the visual standards of a finished interior. It is particularly well suited to spaces that shift between individual work, informal collaboration, training, and social use.
- Workplace environments: support touchdown work, sit/stand stations, and collaborative areas.
- Education and training spaces: introduce flexible seating that can be moved and regrouped as activities change.
- Healthcare and waiting areas: bring a warmer, more residential character to spaces that need durable, cleanable upholstery options.
- Hospitality and residential interiors: add a compact perch stool with genuine material and finish choices.
What stands out
MÜM™ stands out because it does not force a choice between active sitting and design integrity. Its movement is purposeful, and its upholstery and base options allow it to participate in a complete furniture design scheme. The leather handle adds a useful detail without making the product look utilitarian.
For spaces that have outgrown rigid seating but are not willing to fill the room with plastic gadgets, MÜM™ offers a more credible alternative: a compact, movable perch stool that invites the body to stay engaged while respecting the character of the space.