Whats In The Supermarket Already

I decided to go into my local supermarket and have a look at what they were using to hold 4-6 bottles of ale or cider, to have a look at how they work. The below is what I have found (while getting very strange looks from onlookers seeing me photograph things in the middle of an aisle).

I noticed that all were near the same with the same structure. With a handle attached - they all seem to be one piece of card then folded and stuck together using glue for them to be able to hold the weight of the bottles. I only found one carrier that supported six bottles, which used a thinner card, which I thought was very strange.