This filled with water will create fabulous doodles and images. It doesn' t need any removal tool, the painting will magically disappear in few minutes ready to doodle again. Clear water paint is environmentally friendly and safe, you can let your child' s imagination run free without dirtying anywhere or hurting your child for the round point. Specifications: Handle Material: Plastic Point Material: Polyester Fiber Handle Color: Red ( 4Pcs ) + Yellow ( 4Pcs ) For Age: 3- 14 Years Old Size: Length: 9. 5cm/ 3. 74inch, Diameter: 2. 2cm/ 0. 87inch ( appr. ) Quantity: 1 x Set of 8Pcs Magic Pens Type: Drawing Toy Function: Painting, Doodling and Learning Tool How To Use: 1. Spin the pen head to open the pen. 2. Add clear water into the pen body. 3. Spin again to close the pen. 4. Start to paint. Notes: 1. Please soak the pen point in water for over 30 minutes until it inflates fully to avoid water dripping and paint more fluently for the first time use. 2. The drying speed of water print varies depending on the drying degree of environment, 5- 10 minutes in summer, uncertain in winter for large temperature difference in different places. 3. Trace may be left on the edge where you have painted with yellowing water, which does not affect normal use and can be removed after washing. 4. Please allow 1- 3cm error due to manual measurement. Thanks for your understanding. 5. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. Package Including Package Includes: 8 x Magic Pens About this item Educational Drawing Pen : This magic drawing pens are beneficial for color perception and exercising hand-eye coordination, developing painting and creative skills. Also very suitable for painting with friends together, which can improve cooperation ability and communication skills, enjoy the happy time! Safty Replacement Water Pen : No ink, non-toxic and safe to use, Never make a mess, you will play with your imagination with the water pen, satisfying the creativity of your infinite painting, harvest more fun. Easy to Use : Just unscrew the head of the pens and fill the magic pen with clean water and start doddle on the mat. NOTE: Before using, please soak the head of the pens in the water for 10 minutes until it inflates fully to avoid water dripping. Reusable Water Doodle Pens : The water painting will disappear automatically after several minutes of water evaporation with no removal tools needed, which is interesting and convenient. Bringing as much fun as possible. Wonderful Gift : The water doodle pens are wonderful gifts for your friends and families who love art and painting, which can be applied on various types of doodle drawing mats or water coloring books, they will love such gifts. Educational Drawing Pen : This magic drawing pens are beneficial for color perception and exercising hand-eye coordination, developing painting and creative skills. Also very suitable for painting with friends together, which can improve cooperation ability and communication skills, enjoy the happy time! Safty Replacement Water Pen : No ink, non-toxic and safe to use, Never make a mess, you will play with your imagination with the water pen, satisfying the creativity of your infinite painting, harvest more fun. Easy to Use : Just unscrew the head of the pens and fill the magic pen with clean water and start doddle on the mat. NOTE: Before using, please soak the head of the pens in the water for 10 minutes until it inflates fully to avoid water dripping. Reusable Water Doodle Pens : The water painting will disappear automatically after several minutes of water evaporation with no removal tools needed, which is interesting and convenient. Bringing as much fun as possible. Wonderful Gift : The water doodle pens are wonderful gifts for your friends and families who love art and painting, which can be applied on various types of doodle drawing mats or water coloring books, they will love such gifts.