Make their 21st birthday unforgettable with this Minty Green Signature Block — a mini, freestanding 21 that doubles as a guest-sign keepsake. One size, pack of 1, it sits perfectly on cake or gift tables and comes with a Sign-It marker so friends can write messages and signatures. Ideal as a photo prop and memory piece to take home after the party.

• Includes: One minty-green number 21 signature block (mini) and Sign-It marker
• Colour / Design: Mint green with "Happy Birthday" script
• Key Feature: Guests can sign directly to create a keepsake and photo prop