Write It, Slap It, Remember It: With 12 writable wristbands per pack, 2 in 6 colors, you can always keep an eye out for important notes, reminders, or motivational quotes in a stylish and ; a great memory aid to always have on hand Writable and Erasable: Measures approximately 9.4 x 1.8 inches / 23.8 x 4.5cm, the reminder wristband is designed to fit for your wrist, with an 8-inch/20-cm measuring ruler on the back and a to-do list on the front; if you write with a pen, it is recommended to erase with an eraser within 24 hours Easy to use: The silicone wristband is a versatile tool that can be used for a range of purposes, from favors, classroom rewards to event giveaways, and can easily hug your wrist with a gentle tap, which can be adjusted according to the size of the wrist, suitable for daily use Waterproof silicone material: The silicone slap bracelet is mainly made of silicone and is ; in addition, they are also waterproof, perfect for beach days, water parks or just washing hands without worrying about deformation, whether you are washing your hands or sweating, they will not get wet Wide application: Looking for a unique and practical gift, the memo wristband is perfect for birthdays, school activities; recipients will appreciate the thoughtful and useful gift given by students, teachers, doctors in learning and work, which is not only a reminder, but also a measuring tool Colour:As Shown Material:Silica gel Package Contents: 12 x writable wristbands Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.