The range of premium products, featuring an easy-to-use handle, has been expanded to include a collar made from a webbing strap. This is the most powerful retractable cruiser available, and it comes in an open package that allows consumers to "try" before buying. Measurement Guide Size 1 - Small for dogs weighing up to 20 kg Size 2 - Medium for dogs weighing up to 25 kg Size 3 - Large for dogs weighing up to 65 kg