Material: PVC, Copper-plated copper wire. Dimensions: (approx.) Length 30cm - 4.5m. Extra-long ferret tunnel! This long type allows for straight lines, curves, tying, and even slopes. * Freely deform the bellows to create a fun, small amusement park. * With a 12.5cm diameter tunnel, even chubby ferrets can enjoy it. * It's transparent, so you can clearly see them playing. ※ Due to the nature of the product, the tunnel may shrink initially when extended. In this case, please use clothespins or similar to secure both ends until it becomes familiar. ※ Regarding the product's odor: Due to the characteristics of the material, some products may have a strong vinyl smell. We inspect the products before shipping, but if you notice an odor, placing it in a well-ventilated area for a few days will allow it to dissipate. We hope you will try this. Long-term storage.