SKYZONAL DIY Building-on bricks mug coffee cup my building blocks christmas gifts water bottle tea cup Happy puzzle game,the children play their unique creativity with this build mug Build something on your mug while drinking some coffee. Have fun! 12-ounce capacity. Insteresting mug with exterior building surface. Enjoy your coffee, tea, juice, and milk. Build something on your mug while drinking something. SkyzonalTM is a US registered trademark protected by the US Trademark Law.