Flexi Vario Cord Leash The Flexi Vario Cord Leash is a multi-belt link system & can be customised with functional Vario accessories. It has a short-stroke braking system & soft grip. Small – For dogs up to 12kg Medium – For dogs up to 20kg Duo Belt – Suitable for Small Vario Soft Stop Belt – Suitable for Small Medium & Large Vario LED Flash Belt – Suitable for Small Medium & Large Vario