Description: As a toy with DIY design and interactive function, it can help to improve hands-on ability and parent-child relationship. It is an educational toy which can let kids record the change of the faux crystal and explore the principle, and it helps to develop kids independent thinking ability and logical thinking ability. It is made of TPR, ABS, and ammonium dihydrogen phosphate materials. The length of the toy is 8.3cm, the width is 8.3cm, and the height is 10cm. The cup diameter is 4cm. It is suitable for education, kids, experiment, etc. Item Name: Faux Crystal Toy Material: PVC,TPR,Ammonium Dihydrogen Phosphate Features: Safe, Educational, Colorful Applicable Age: 7-14 Years Old Color: Apple Green (Green), Golden Color Yellow (Yellow), Dream Purple (Purple), Ocean Green (Turquoise), Purple Red, Sky Blue (Blue) Size Details: Product Size: 8.3cm x 8.3cm x 10cm/3.27" x 3.27" x 3.94" (Approx.) Cup Diameter: 4cm/1.57" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Experiment Principle: First, adding hot water into the faux crystal powder to make it saturation. Second, the crystal powder will separate out in the form of crystals after the water cool down, and the crystals will develop along the direction of the gypsum . This phenomenon is called crystallization. Instruction: 1.Washing your hands and keeping clean before the experiment. 2. Do not touch the mouth and nose of the glasses with your hands during the experiment. 3. All the experimental materials are only for the experiment. Please take care of your children to avoid eating them by mistake or for other purposes. 4. Do not expose the experimental materials under the sun. Keeping the experimental materials sealed and stored. Package Includes: 1 x Faux Crystal Powder Pack 1 x Mini Faux Crystal 1 x Crystallization Cup 1 x Cup Cover 1 x Stirring Stick 1 x User Manual