AVIDITI 9x6x4 Inches Small Shipping Boxes (100-Pack) - Heavy Duty Corrugated Cardboard Boxes for Packing, Moving & Storage | Strong Wholesale Bulk Boxes for Home, Office or Business Use | Perfect for Ecommerce, Retail Shipping & Warehouse Organization

I bought these after reading reviews of other boxes & I'm happy I did both. all of the walls of the boxes are sturdy. not listed in the product description is that the box supports up to 65lbs (you'd have to look at the photo chart).some people commented on the dimensions being inaccurate. I can confirm this BUT it all depends on how well your tape-job is. if you assemble and tape loosely, the inside dimensions will seem large. if you assemble and tape tightly, you won't have that problem. I packed mine up well and the internal dimensions were 7" x 5.25" x 4.25" and is perfect. for example:I am shipping 4 individually-boxed items that are 6" x 5" x 1" and they fit perfectly with 1" to spare. did not have to cram anything in. now if the internal measurement was 0.25" smaller, I would have probably needed to apply pressure while taping to keep the box in shapethe only thing that I didn't like was that all the boxes arrived as a loose bale and was then fully wrapped in plastic wrap. that made all of the boxes have rounded flaps corners and slight crushage. once you assemble, the rounded/crushed flaps do their job. they don't look mangled and bent when built?? - amazon often packs small boxed items in a large amazon box for no reason. so why was this fully wrapped in plastic? - with one part actually being exposed. there would have been no rounded or damaged flaps had they been in a boxoverall I will buy again when needed