Polyester core thread with cotton surface. Use for tent and tarp seams. Cotton expands when it gets wet so seam will be almost waterproof.
Thread manufacturer recommends #90 or #100 needle, but on thin tent fabric usually #70 also works, and you get smaller holes and less water leaking through the seams.
Rasant is certified according to the Oeko-tex Standard 100 for textiles tested for harmful substances.
Thread in a roll: 1000m
Oeko-tex Standard 100
Material: 70% PES, 30% CO
Price 0,075 €/m