May 11, 2026
Description
Keep your child’s car seat harness properly positioned with this anti‑escape chest clip, designed to prevent toddlers from loosening or slipping out of the shoulder straps during travel.
The model consists of two parts: a base with a central hole and a top piece with a locking insert. Once attached, the clip keeps the straps parallel and stable, improving both comfort and safety.
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Anti‑escape system for 25–30 mm harness straps
Two‑piece design: base + locking insert
Snap‑fit closure with calibrated tolerances *
Rounded edges for comfort and safety
Compatible with most Group 0–1–2–3 car seats
Quick assembly – click and go
The clip attaches to the two shoulder straps, keeping them parallel across the child’s chest.
The base with the central hole receives the red insert, which locks with a firm click yet remains easy for adults to release.
The result is a stable, lightweight, and comfortable system that reduces the risk of the child escaping the harness.
Material: PETG or ABS (for strength and temperature resistance)
Layer height: 0.20 mm
Infill: 40–60%
Supports: required
Orientation: flat for maximum side‑arm strength
Part A – Base with hole
Part B – Locking insert
STL files ready to print
STEP file for customization
This accessory does not replace the original safety systems of the car seat.
Always use according to official safety regulations and under adult supervision.
License:
Creative Commons — Attribution — Noncommercial — Share Alike
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