Quick answer
Fogging happens when warm, moist air from your baby's breath meets the cooler raincover surface. Improve airflow by partially opening the air window or positioning the cover so a small gap allows ventilation.
Why fogging occurs
A raincover creates a sealed microclimate. Your baby's exhaled breath is warm and humid. When that air touches the cooler plastic of the cover, condensation forms as tiny water droplets — the same physics that fogs a car window on a cold morning. The tighter the seal, the faster fog builds up.
Trade-off: ventilation vs. rain protection
Opening the cover more reduces fog but also lets in moisture. The trick is to create a small, controlled gap that allows air exchange without exposing your baby to rain. Many covers, including the Cybex Cloud T / Cloud G / Aton Raincover, include an air window designed for this exact purpose.
Diagnosis & fix
- Symptom: Heavy fog on the inside of the raincover, making it hard to see your baby.
- Likely cause: Warm, humid breath trapped under a nearly sealed cover with no ventilation path.
- Corrective action: Open the air window (if your cover has one) or create a small gap at one side or the bottom. This allows moist air to escape without letting in rain. For the Cybex Cloud T / Cloud G / Aton Raincover, the built-in air window is the easiest solution. Check the cover after a few minutes. If fog persists, try a slightly larger gap.
- Stop or choose another option: If fogging continues even with the air window fully open, the cover may be too warm for the current conditions. Remove the cover temporarily when rain stops, or consider a cover with more ventilation features.
Product feature that helps
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Cybex Cloud T / Cloud G / Aton Car Seat Raincover: The Cybex Cloud T / Cloud G / Aton Raincover includes an air window opening for easy, breathable access. You can use that window to let warm air escape while still keeping rain out, which directly reduces condensation.
Cybex Cloud T / Cloud G / Aton Car Seat Raincover
