Customizable earplugs are available in six designs: solid, hollow, star-shaped, heart-shaped, plus sign, and minus sign.

[Update] April 12, 2013

• Added the design of positive and negative signs.
• Add the "parts" parameter to the customization tool.
• For dual-head printers, it supports generating multiple STL files for output.

！Users of dual-head printers, please note: Be sure to set the "gap" parameter to zero.