Touch this bookmark and watch it change colour with the warmth of your hand. The warmth of your hand and ambient (room) temperature causes the liquid crystals encased in the bookmark to refract light differently depending on the temperature. Soothing but great fun! Overall size 40mm x 150mm. The Colour Change change can be pale or stronger in shade depending on ambient temperature. The activities appeal to the immediate sensations: warm fingers produce colour changes, rubbing hands together produces heat. See our Store for more colour changing products.
I**S
Slightly disappointed
I was rather disappointed by this as it looked really cool in the picture and I bought it as a gift for a friend. When it arrived, it was only a piece of cardboard with the coating on (it didn't even come in packaging) and I would have felt ashamed to give it as a present, so I ended up having to find something else.I'd say that there's nothing wrong with it being like that, but it's worth knowing that that's what you should expect in the post when you order it. I wouldn't order it again.
H**S
Disappointing
Disappointing - the colour changing side is only on one side not 2.Its thick & floppy like plastic mounted on cardthe card can be peeled off but looks awful.Not impressed with this one.It will change colour with the heat of your hand but still not impressive at all.
L**N
Was brilliant the first week but quickly became damaged round the ...
Was brilliant the first week but quickly became damaged round the edges that were near the books spine and lost it's colour changing a bit
M**S
Cool but fragile.
4 stars because it's really cool. Would be 5 stars if it were plastic or at least made of something a bit tougher than it is.
N**S
Fun
Works very well, daughter enjoyed for her birthday
L**S
Useless
Only changes colour on the windosill!
A**N
Good product
Good colour changing product which the boys liked, thin material though for a book mark.
P**N
It's a bit rubbish
Just a flimsy bit of paper. It won't last long. If you want to see most of the colour changing effect you'll have to put it in the fridge, as most of the effect is already used up in a warm room.
Trustpilot
2 weeks ago
2 days ago
