Give them out to all your pi-loving friends! Math teachers love 'em!

Product Information
Wear and share a favorite design or saying with 10 of your closest friends. Pass 'em out at parties, give 'em away at Burning Man. Keep 'em all for yourself and make some unique wall art. Collect 'em, trade 'em.

• 2.25 inch diameter
• Metal shell
• Mylar/UV protecting cover
• Pinned metal back
• 10 pack