The Living World® Adjustable Harness and Lead Set for Ferrets is made of safe, comfortable and durable nylon material. The color-coordinated set is custom designed to comfortably fit your ferret. The adjustment slides allow quick, customized fitting. The harness is easy to use and has a quick release feature. 8 mm (0.3 in) wide x 13 - 20 cm (5.5 - 7.9 in) neck, 14 - 21 cm (5.5 - 8.2 in) body, adjustable 1.2 m (4 ft) lead.