Amazon.com: Large Microfiber Car Drying Towel 1300 GSM Double Twist Autofiber Dreadnought XL Blue and Gray 20" x 40" Detailed Image Amazon.com: Autofiber Dreadnought Max Triple Layer Microfiber Car Top 5 Microfiber Car Drying Towels: Reviews & Buying Guide. Autofiber [Dreadnought XL] Microfiber Double Twist Pile Drying Towel (20 in. x 40 in., 1100gsm) 1 pack Made with a long pile twist microfiber weave. The double layer design has interior sewn edges, and center stitching, for structural integrity and durability. The 20"x40" size is perfect for the 1100 gsm weight and thick pile, lending itself to be easily used as open sheet or folded twice (for 8 distinct sections). The twist pile design glides softly across paint glass and plastic surfaces, while absorbing completely streak free. This 1100 gsm microfiber car drying towel performs particularly well in windows and mirrors, and can still absorb streak free when slightly damp. 20x40 1100 gsm 75 25 blend Hidden Edge Inside Sewn Made in China