Large Plastic Bath Bomb Molds 12 Sets 2.75" by Ian's Choice TENNIS BALL SIZE: 2.75" Inch Diameter Bath Bomb Molds Clear Round Clamshell 12 PACK: Set of 12 Large Clear Plastic Bath Bomb and Fizzies Molds EASY TO USE: Make Your Bath Bombs Then Leave in the Mold Until Ready to Use ROUND MOLD: The Round Mold Can Also Work As A Packaging for Your Bath Bombs ESSENTIAL TO A BATH BOMB DIY KIT:It's A Must Have In Your Bath Bomb Making Sets