The Triton harness is a one-size-fits-all canyoneering harness with a steel tie-in point for durability. The Triton+Active harness incorporates an interchangeable PVC protection. The Triton+Active Pro has a super durable protection seat made from hypalon fabric. Perfect for the canyoneering pro. The Elongation Fuse is used between your descending device and the harness in case you need to free yourself from a dangerous situation. Sold separately.