Sound Sleeper | Sims 4 Infant Trait

This trait adds a new personality option for your littlest Sims, inspired by cosy mornings, restfulness and a peaceful home life.

Sound Sleepers are calm, cozy, and happiest when they’re wrapped up in a good nap. Perfec for first time parents, these little sims will sleep through the night, love to be held, and make family life feel a little easier.

💤 Energy decays slower (they really can sleep forever)
🍼 More likely to sleep for longer and make it through the night without fuss
🖐 Fine Motor skills build slower (they’d rather nap than crawl around)
🤝 Friendships build faster (their calm presence keeps parents happy and rested)
🌙 May gain up to three sleep-related quirks: Rise with the Sun, Self-Soother, Loves Waking Up.

The Sound Sleeper is your dream little one: happy, sleepy, and endlessly snuggly.

Trait

Sound Sleeper: These Sims are the soundest of sleepers, they love nothing more than being comfy, cozy and most of all, asleep. They'll sleep through the night and love to be held and comforted.

Update

• Last Updated: 3rd August 2026 - Updated to fix infant animation

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• French: Eliana's Diaries

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Hope you like this little addition to the trait collection.

Love Bee xo