Twillfast by Haartz

MBS is proud to be the exclusive UK importer of Haartz Twillfast® fabric, one of the world’s most widely specified and trusted automotive soft-top hooding materials.

Twillfast® II and Twillfast® IV are premium three-layer composite fabrics, engineered for exceptional strength, stability, and long-term performance. The construction features a solution-dyed acrylic square-weave outer fabric for excellent colour retention, a TPU elastomer middle layer for reliable waterproofing, and a polyester/cotton dobby lining that provides structural stability and a refined interior appearance.

Renowned for its dimensional stability—even at high speeds—Twillfast® delivers outstanding resistance to weathering and deformation, making it a preferred choice for both OEM heritage applications and modern aftermarket replacements.

Key Features

  • Three-layer composite construction
  • Excellent waterproof performance
  • High dimensional stability, including at motorway speeds
  • Durable, colourfast outer fabric
  • Proven global OEM and aftermarket use

All colours are supplied with a standard black lining, with a beige lining option available on selected colours.

Specification Details
Material Type Fabric Automotive Hooding
Construction 3-layer composite
Outer Layer Solution-dyed acrylic square weave
Middle Layer TPU elastomer membrane
Inner Layer Polyester / cotton dobby lining
Waterproof Rating Fully waterproof
UV Resistance Excellent
Colour Fastness Very high
Dimensional Stability Exceptional (high-speed stable)
Stretch Resistance Very high
Acoustic Properties Good
Typical Applications OEM-style and aftermarket soft tops
Global Usage One of the world’s most widely used hooding fabrics
Standard Lining Black
Optional Lining Beige (selected colours only)
Available Colours Blue, Euro Green, Beige, Black
Haartz Outer Fabric Colours

Beige, Black, Blue, Euro Green

Haartz Inner Lining Colours

Beige, Black