I was lucky to be chosen to test these reins. I chose the size 13mm and I’m very happy with my choice as they are not bulky between the fingers. I love the classy all leather on the outside of the reins and rubber on the inside to prevent them from slipping. I haven’t had the chance to test them in rain but the rubber did it’s job on a sweaty horse 😊 The quality is great, let’s see how these hold up in the long run. These are probably more intended for dressage riders but as a showjumper, I’m very happy I got to test them out! 5⭐️ from me, I definitely would recommend these! 🥰