Our Top Picks
- The Design Marvel: The Boln Slim collection, designed by Stone Designs Madrid, offers a revolutionary modular seating system that bridges the gap between sculptural art and ergonomic utility.
- The Material Hero: It features proprietary Flexyskin technology, a plant-waste-based polyurethane that is REDcert-certified, weather-resistant, and incredibly soft to the touch.
- The Versatility King: With 7 distinct modular configurations and 14 vibrant colors, it is the ultimate choice for designers looking to create "seating mosaics" in both high-traffic commercial lounges and private residential patios.
Life, as they say, is too hard to spend sitting on something just as rigid. For years, the world of contract and outdoor furniture has been caught in a tug-of-war. On one side, you have the durability of hard plastics and metals—tough as nails, but about as comfortable as a park curb. On the other, you have plush, upholstered cushions that feel like a dream but perish at the first sign of a rainstorm or a spilled latte.
This is where the Boln Slim collection enters the room—or the terrace. Developed by the visionaries at Stone Designs Madrid, Slim isn't just a bench; it’s a masterclass in material science disguised as high-end furniture. The core answer to the comfort dilemma lies in its proprietary Flexyskin technology. This modular seating system uses a soft, plant-waste-based polyurethane foam to provide an ergonomic experience that is surprisingly plush yet incredibly portable. It redefines what "soft seating" means for the modern world, proving that sustainability and comfort can coexist in a single, sleek silhouette.
Flexyskin: The Sustainable Science of Softness
As an editor, I see a lot of "eco-friendly" labels, but Flexyskin is something different. It’s not just recycled; it’s transformative. Bõln has pioneered a REDcert-certified material that takes plant waste and turns it into a high-performance polyurethane. This isn't the stiff foam of the past. It is a material designed for the "haptic" experience—it invites you to touch it, sink into it, and stay for a while.
The environmental impact is equally impressive. By utilizing energy-efficient manufacturing processes and ensuring the material is 100% recyclable, Bõln has managed to create a product with a remarkably low carbon footprint. But for the end-user, the benefit is purely physical. Flexyskin is soft to the touch, yet it possesses an "organic skin" that is waterproof, antibacterial, and resistant to the UV rays that typically bleach the life out of outdoor furniture. It’s a material that feels like an indoor sofa but acts like an outdoor powerhouse.

Ivy’s Insider Tip: When styling with Flexyskin, don't be afraid to place these pieces in high-sun areas. Unlike traditional plastics that become brittle, Slim maintains its "plushness" and color integrity year after year, making it a "buy once, enjoy forever" investment.
One Mold, Infinite Configurations
From a design perspective, the engineering behind the Slim collection is nothing short of brilliant. Stone Designs Madrid focused on a "single mold" philosophy. Utilizing a single proprietary mold for its Flexyskin core, the Slim collection drastically reduces manufacturing waste and energy consumption. Yet, from that one core, they have engineered over 7 distinct structural configurations that can be adapted for any public or private space.
The beauty of the Slim collection lies in its modularity. You aren't just buying a chair; you’re buying a building block. The collection includes:
- Geometric Stools: Perfect for quick perches or as accent side tables.
- Straight Benches: The foundation for long, sleek corridors or waiting areas.
- Curved Benches: Designed to create organic flow and "social pockets" in open-plan spaces.
- Integrated Table Surfaces: Seamless transitions from seating to utility.
- Backrest Modules: For those moments when a longer stay requires extra lumbar support.
- Corner Units: To navigate architectural pivots with ease.
- Multi-level Tiers: Creating stadium-style seating for dynamic environments.
Because the pieces are lightweight, they offer a level of portability that traditional commercial furniture lacks. You can reconfigure a lobby for a morning conference and shift it back to a social lounge by happy hour without needing a furniture moving crew.

Aesthetic Versatility: A Mosaic of Color
If the structure of the Boln Slim collection is the bones, then its color palette is the soul. One of the most striking features of this collection is the sheer breadth of customization. With 14 vibrant color options, the aesthetic possibilities are virtually endless.
Designers can play with these colors to define the "vibe" of a space:
- Monochromatic Minimalism: Use shades of slate, sand, and charcoal to create a sophisticated, architectural look that blends into the background of a modern office.
- Playful Color Blocking: Mix terracotta, forest green, and mustard yellow to create a "mosaic" effect. This is particularly effective in educational settings or creative studios where visual stimulation is key.
- Atmospheric Branding: Choose colors that align with a corporate identity, turning functional seating into a subtle branding tool.
The finish of the Flexyskin material has a matte, velvety quality that catches the light beautifully, ensuring that even the boldest colors look expensive and intentional rather than "plastic-y."

Application: From Public Lounges to Private Patios
The versatility of the Slim collection makes it a "chameleon" in the world of interior design. In commercial settings, it solves the problem of "dead space." Auditoriums, waiting rooms, and airport lounges often feel cold and clinical. By introducing the soft curves and welcoming texture of the Slim benches, these transit zones become destinations in their own right.
However, I am increasingly seeing these pieces migrate into residential spaces. As our "outdoor rooms"—balconies, patios, and pool decks—become extensions of our living rooms, we demand the same level of comfort outside as we do inside.
- For the Backyard: Imagine a curved Slim bench encircling a fire pit. It’s weather-resistant, easy to clean with just a damp cloth, and won't get scorching hot in the summer sun.
- For the Balcony: The lightweight stools are perfect for small-scale urban living, serving as seating one minute and a cocktail table the next.

Whether it’s a public park or a private garden, the Boln Slim collection provides durable, lightweight seating that redefines what we expect from our furniture. It isn't just about having a place to sit; it’s about the quality of the experience and the footprint we leave behind.

FAQ
Is the Boln Slim collection suitable for permanent outdoor use? Absolutely. The Flexyskin technology is specifically engineered to withstand outdoor elements. It is UV-resistant, waterproof, and has an antibacterial "skin" that makes it incredibly easy to maintain in any climate, from poolside humidity to dry terrace heat.
How do I clean Flexyskin furniture? One of the best features for high-traffic areas is the ease of maintenance. Because the material is non-porous and seamless, you can simply wipe it down with a damp cloth and mild soap. It’s resistant to stains and doesn't have crevices where dirt or moisture can hide.
Can I mix and match the different configurations? Yes, that is the core intent of the collection! All 7 configurations are designed to fit together like a puzzle. You can combine curved benches with straight sections and stools to create a custom seating installation tailored to your specific floor plan.
Final Thoughts from Ivy
In a world of fast furniture, the Boln Slim collection stands out as a beacon of thoughtful, sustainable innovation. It asks us to reconsider our relationship with "hard" surfaces and invites us to embrace a softer, more flexible way of living. If you’re looking to elevate a space—be it a corporate lobby or your own backyard—Slim offers the perfect balance of Madrid-born style and eco-conscious substance.





