2 wide adhesive backed polyester. Sold here on a 150' roll.
Marine Tapes & Sail Repair - Tools, Tapes and Sealants - Chandlery
Sail Repair Tape (8 Colours Range) – Boat NZ
1.5cm~10cm Kite Sail Repair Tape Patch Backup Tool – 9km-dwlife
Quality Repair Tapes from Duck & Sail store
Challenge Sailcloth Adhesive Products by Ben Bainbridge - Issuu
Chinook Sail Repair Tape
Sail Repair Tapes vs. Glues - Practical Sailor
470 N15-L5 MAINSAIL
Challenge Sailcloth - UltraTNT™ PSA Tape — Challenge Outdoor