Child Seat Belt Safety Lock Customizable!

This Customizable Child Seat Belt Lock (buckle guard) is designed to help prevent children from unbuckling their seat belt while riding in a vehicle. 

The lock is opened using a key on your key ring, making it convenient for adults while remaining secure for kids.
 

The model is fully customizable, allowing you to adjust the dimensions to fit your specific vehicle and seat belt setup.
 

Default internal dimensions:
32.5 × 50.5 mm

Default Size fits the list below:  (confirmed by users and or myself)

2020 Subaru forester
2015 Honda Odyssey

2022 Honda Ridgeline

If you find the default size works please send me a message or leave a comment below and I will try to keep the list updated for others. 
 

🔧 Customizable Parameters

You can modify:

• Width
• Length
• Height
• Key hole size
• Break away strength 

This flexibility makes it easy to tailor the lock to different car models, seat belt styles, or personal preferences.


🖨️ Printing Recommendations

• Material: PETG or ABS recommended (heat-resistant for vehicle interiors)
• Supports: Not required
• Layer Height .2mm

If you have any issues when changing sizes please let me know. This is my first customizable model. 
 

⚠️ Safety Disclaimer

• This is not a certified safety device
• Intended as a supplemental restraint aid, not a replacement for proper child safety seats or manufacturer-approved products
• Use at your own risk
• Always ensure compliance with local laws and vehicle safety regulations
• Adult supervision required
  
   

Break away concept inspired by "seat belt lock" by mgm86.