The UnionBasic Square Pen Holder is built around a cold-pressed internal frame of medium-density fiberboard (MDF) covered in a textured polyurethane (PU) skin. This construction provides a rigid, uniform shape that fits neatly into corner spaces on a desk. The interior is lined with a non-woven polyester fabric, which serves as an acoustic dampening agent to reduce the clatter of pens and tools being dropped into the cup.
Specifications indicate the unit can support approximately 2.5 lbs of static weight, which is more than sufficient for a full load of office supplies. The stitching is high-density to prevent seams from separating under daily use. Because the internal core is made of MDF, it is important to keep the unit away from standing water or high humidity, which can cause the frame to swell or the outer skin to peel.
While the PU leather provides a sophisticated look, it lacks a high-grip base. On very smooth surfaces like glass, the holder may slide easily. To improve stability, adding small silicone bumpers to the bottom can help anchor the unit. The vibrant red finish is treated to resist fading from UV exposure, keeping the color saturated even in sunny rooms.
If you are looking for a more heavy-duty, metal-based organizer, the Marbrasse mesh organizer offers expanded capacity and rotation.
Check out our variety of textures and styles in the desk caddy category.
