Ridges are wonderful. Make sure you provide internal protection by individually wrapping your items and providing lots of cushioning.
Closure is important.
Use strong tape designed for shipping. Use proper labeling that includes complete delivery and return address information. Make sure to place a duplicate label inside your box. Remove or cross out any old labels or markings on a used box. Choosing the Right Box Selecting the Best Packing Materials Irregularly Shaped Items Choosing the Right Box For best results, use a new, corrugated box with plenty of room for cushioning on all sides of the contents.