<b>More Choice,More Privacy:</b>a Invisible Ink Pen pack of 26 pcs with 4 assorted Colors of colors pink, Yellow, green, and blue.the 2 styles of are flat and pointed. If you have trouble in choosing ,then the kit very suitable for you !you can't see it until they shine the pens light over where they wrote. The invisible ink pens are very popular around people, which can create a lot of fun. People can use it to communicate secretly and hide messages. Children think that they are secret agents with these pens, lay mystery adventures and writing clues for each other. You can make secret spy messages with your friends. <br /><b>Used Widely:</b>Goody bags for kids spy party. Make a fun party favor.Perfect for the RSVP's to wedding invitations,best party ,giveaway,Stocking stuffers,Halloween treats,Prize,etc.Even using the UV light to check dollar bills.<br /><b>Features:</b><br /> -Different color plastic casing with attracts children eyes(Ink is the same color as the casing)<br /> -Recommended quantity,26 Pcs is good for Birthday party goodies,Halloween goody bag and so on <br /> -Harmless and flavorless ink,healthy toys for your children!<br /> -Smooth and Available for T-Shirts,paper,skin,wall and any surface.<br /> -Permanent but washable easily.<br /> -A great gift for spy detector.<br /><b>Package Information:</b><br /> -26 pcs included:4 green flat ,3 blue flat ,3 yellow flat,3 pink flat,4 green pointed,3 blue pointed，3 yellow pointed，3 pink pointed.<br />-Each one is assembled with a battery.<br /><b>Note:</b><br />-The ink is permanent but washable, you can use the cleaning liquid for completely clean.<br />- Before delivery, we have checked every light to ensure each of them work. If you received the one does not light on, you may just open the top clip and adjust the battery, it will work again.<br />