Intrepid International Nylon Side Reins with Elastic Go to amazon.com Related posts Top 10 best side reins for 2019 Top 16 side reins for 2020 FeatureNylon Web Side ReinsFully AdjustableStrong Elastic DescriptionSide Rein, Nylon with Elastic. This pair of Nylon Side reins is made with an elastic insert and is fully adjustable. Color is Black only.