We generally recommend that you use sturdy, unused cardboard boxes for parcel shipping of sensitive products. To additionally protect your goods inside the parcel from shocks, use bubble wrap or foam for empty spaces. Also make sure that all labels are correct and legible and that old ones have been removed.
We will also be happy to advise you individually to find the optimal packaging solution for your parcel. As a customer, you can also request free packaging material from us: contact@letmeship.com