[header] How to make a braided horse rein [title] Cut 9 strands of paracord twice the length you want your reins to be. [step] Measure and cut one cord first, then use it as a guide for cutting the others. You can use however many colors you want, but keep the color combination in mind. 
[substeps] If you want a thinner set of reins, cut 6 strands instead. Most packs of paracord will be close to the right length.