The damage from a lunging dog is not spread evenly, it happens in the instant the lead goes tight. That jolt travels into your shoulder and wrist at one end and into your dog's chest at the other, and on a stiff lead there is nothing between the two of you to absorb it. An elastic section takes that peak out, stretching over a fraction of a second so the same force arrives more slowly and considerably more gently at both ends.

The webbing is 2.5cm wide, broad enough to hold without cutting into a hand, and the elastic section resists bursting under repeated loading rather than gradually going slack. The lead runs from 1.16m relaxed to about 1.8m at full stretch, so it gives a little on a normal walk and lengthens when your dog moves ahead. Reflective stitching runs the length of the webbing, a padded handle takes the pressure off your palm, and the clip is sized to match the pull expected of it.

• Elastic bungee section absorbs sudden lunges
• Anti-burst construction resists snapping under load
• 2.5cm wide webbing, 1.16m extending to about 1.8m
• Reflective stitching along the length for low light
• Padded handle and a strong clip
• Six colours: black, blue, lake blue, orange, khaki and dark red

On sizing, and a correction. Earlier copy on this product mentioned a choice of sizes, and that is wrong: every colour is the same single length, 2.5cm by 1.16m to 1.8m. Only the colour changes. Use it with a harness rather than a collar, because a bungee still transmits force and you want that landing across the chest. It also cushions pulling rather than curing it, so pair it with training if that is the underlying problem.

Who it's for: Owners of a strong or reactive dog who want the jolt taken out of everyday walks, especially in the dark.