Leashes can be very valuable if you’re prone to dropping your skis off a mountain. The Plum leashes are a coiled cable and carabiner that can be hitched to your toe pieces and then to your boot. If your ski comes off, the leash will keep it attached to your leg. If your leg comes off, then all bets are off.
These are the same leashes that are shipped with every brakeless Guide binding. Sold in pairs.