Cardboard Moving box (H)408mm (L)405mm (W)405mm

The box sizes are ok if you're packing light weight things but totally unsuitable for anything such as Kitchen pots and pans or books. They are sold as moving boxes but are nothing like the professional packing boxes.

Easy to build and study enough to travel with Parcelforce

BEWARE: These products are NOT AS DESCRIBED. They CANNOT legitimately be called Moving Boxes, because (despite the price) they are only SINGLE-WALL corrugated cardboard, NOT the double-wall cardboard that is without doubt the de-facto industry-standard practice for moving. They will definitely NOT adequately protect your personal possessions and effects from damage while moving.

Hard to estimate strength by thickness as this is incorrectly displayed at over 400mm.maybe they meant 4mm!
Seemed sturdy enough in the shop but wishful thinking.
When opened out it was flimsy. Needs to be taped along the flaps at the bottom.
Very easy to unfold but not strong enough by any means. Sides were bending in as soon as you put something in it and nothing like as thick as the cardboard things get delivered in. Rather pay more for double this thickness.
Wanted to post an item but not with this it wouldnt last five minutes if they put something on it.