What type of thread is used on your Carver Bimini tops and Boat Covers? October 27, 2023 23:12 Our high quality, marine grade thread is made of bonded polyester and is solution dyed black. The type of thread is Star Ultra Dee (bobbins) and A&E Antiwick. Related to boat cover bimini Related articles What is the difference between Carver materials? What is the size of the Bimini top that I am ordering? Why do I need a support pole? A tie down kit? Do your bimini top frame screws feel rough to the touch? What payment methods do you accept?