Trekell Sienna #4 Filbert Brush - Long Handle

Trekell Sienna #4 Filbert Brush - Long Handle

Designed for artists who want the softness, precision, and responsive snap of natural red sable without using animal products, Trekell Sienna brushes deliver exceptional control, versatility, and performance across oil, acrylic, watercolor, gouache, and ink.

Like all Trekell premium synthetic brushes, Sienna features a blend of varying filament diameters with carefully tapered tips that more closely mimic the performance of natural brush hair. Combined with our proprietary Thermyx™ filament engineered to replicate natural red sable hair, these brushes provide exceptional paint pickup, smooth paint flow, crisp detail, and the refined responsiveness artists expect from premium sable brushes.

The Filbert shape combines the coverage of a Flat brush with the soft edges of a Round. Its gently rounded tip creates smooth blends, soft transitions, and natural-looking forms, making it a favorite for portraits, florals, and organic subjects.

Brush Specifications

• Bristle Length: 7/16"
• Bristle Width: 3/16"
• Handle: Long (10")
  
• Series: 5620
• Shape: Filbert
• SKU: 5620-4
• Designed in Japan • Made in Sri Lanka
  

Built to Last

Each brush is made with Trekell's proprietary Thermyx™ filament. During manufacturing, the bristles are heat-set to create built-in shape memory that helps the brush maintain its clean point, snap, and performance over time.

If the bristles begin to lose their shape, dip them in simmering water for a few seconds to help restore them closer to their original form. Reshape the bristles while warm and allow them to dry in place.

For even longer-lasting performance, apply Trekell Brush Restorer while the bristles dry to help them hold their shape between painting sessions.