This leash is a true jack-of-all-trades, and we’ve used it for both ocean and river surfing. The comfortable ankle cuff and high-quality materials make it feel great in the water, and overall it performs reliably in a variety of conditions. However, it lacks river-specific safety features, which is important to keep in mind. And like with all leashes in river environments, we stay cautious—leashes can be dangerous if underwater features are unknown or if entrapment hazards are present. Overall, it’s a solid, versatile leash, but not the safest option for dedicated river surfing.