ATK ski safety leashes have a Kevlar core for strength, wrapped in coiled polyurethane to make them unobtrusive. When separated from your ski, the cords will stretch out to about 60cm and will break with about 100kg of force.
They weigh only 18 grams and come in sets of two.
Set of two ATK SBC02 safety leashes with carabiner-style snap hooks and metal rings for attaching to your touring boots. Made by ATK in Italy.
For use with the ZR binding, use a short length of thin nylon rope through the small holes at the tip of the toe locking lever to form a small loop. A rope loop is not required for the Ultra World Cup binding as it has a larger leash hole.