Loop reins with rope connectors, a metal free alternative to snaps if you prefer not to have metal parts on your tack. Since they are made entirely out of rope these reins are very durable, but at the same time easy to attach and unfasten. You can find more information about how rope connectors work on the page FAQ & Info
There are 2 rope dimensions to choose from, 10 and 14 mm (3/8" and 9/16"), depending on if you prefer somewhat thinner and lighter reins or thicker and heavier ones. The red reins in the pictures are made out of 10 mm rope and the green ones out of 14 mm rope.