This is the second kit of their that I've bought and simply put, I love them. I'll start by saying I'm writing this review as 32 year old adult with autism, so I enjoy making slime myself because sensory cronch yesss but also I have two children who love to make them too, so I tend to buy a lot of slime-making stuff, and this is by far my favourite. Let's start with the less-great things. The booklets are basic, and don't include a lot of information. For instance, they'll tell you that it's "really hard" to fix an over-activated slime but you literally just add more glue or some hand lotion to it and there you go job's a good-un. Also fun fact, you can cut up over-activated slime and add it to another slime for sensory fun, but also the over-activated slime will melt into it over a day or so as you play with it. The dye and scents are also pretty weak, but they're fine for what they are, they're just not exactly the shining feature of the kit. I want to say the glue is a little lacking because you can only make a couple of good sized slimes out of it (the booklet guides you to make small slimes), and the pots that it comes with are very small (though they are the sizes listed in the info, you get what you buy). I don't consider these to be downsides, however, the glue is the cheapest and easiest component to get yourself, and the little pots are perfect for storing the add-ins for later use. However, the stuff that you actually care about, like the clay and the add-ins, those are great. Good value for money, good selection, and limited though the book might be for detailed instructions, it's a good source of inspiration. The real thing that makes me want to rave about these kits, though, is the activator. If you're in the UK as I am then you know the woes of finding a good activator because apparently we're all allowed to play with lye and bleach and boric acid but commercial borax is too dangerous for it. Ah well. But I'm not exaggerating here - I bought this kit in the same order as 3 bottles of elmers brand "magical liquid" activator, and all three of them combined did as much slime as less than half of the bottle I got with this kit. I'm not even exaggerating - I plan to buy more and more of these products for the activator alone. Hell, if the seller started listing their activator at £20 a bottle, I'd buy as much as my budget would permit - in terms of pre-made commercial activator liquids, this one is by far the best.