Beautiful Design - Stamps Are Matched In A Colorful Assortment Of Hats To Keep The Ink Fresh And Prevent Drying. Different Color Choices, More Unique Custom Stamps, Suit You In Red, Pink, Orange, Green, Blue & More High-Quality Materials Used&Safe for Kids - This is a high-quality stamper set with premium oil-based ink, safe for kids. Stamps are acid-free and lignin-free, the stamp body Is made with sturdy materials, cut with the highest quality laser to ensure a sharp impression every time Inspire Students by Fun&Vibrant Designs-Promote confidence and academic growth with 8 different encouraginginspiring and instructional messages which include Great workVery GoodExcellentGreat Effort and so on. In addition to these 8 messages, there are 7 bonus fun, cartoon designs, including a smiley face butterflystar & more Makes Learning Fun - Great for grading homework, classroom prizesto use in the classroom, or for art projects. With these Self Inking Stamps, you can motivate your studentsKids in a bright and colorful way that makes learning fun and exciting Pre-Inked - Each Stamp Set With A Car Re-Inks And Lasting Use Makes Over 30,000 Impressions. Easily And Quickly Correct Students' Papers To Record, Congratulate, Encourage And Acknowledge Work, And Eliminate Confusion