Congratulations. You are on your way to pick out your baby ferret. You will need to invest in a carrier to bring your baby ferret home. Ferrets grow very fast and that baby ferret at 6 or 7 weeks will be full grown size wise by 16 weeks or 4 months! So plan ahead and purchase a carrier that will be suitable for your full grown fuzzbutt!
Some carriers are not suitable even for a baby ferret of 6 or 7 weeks. There is not enough floor space and very poor ventilation.
So, now you know not to purchase this carrier. If you have one or two ferrets but NO MORE than 2 ferrets the next carrier would be very suitable. Good floor space and best of all great ventilation!
You will notice I have not shown carriers made of cloth with plastic mesh. We have found ferret owners complain that the cloth carriers do not retain their shape. Worst of all, a bored ferret can easily chew the plastic mesh and escape into the car.
Bottom line is that you want the largest carrier possible so that your ferrets have plenty of ventilation and will not overheat.