Le Laboratoire du Sommeil

Get access to our latest news by signing up for our newsletter.

What Should My Baby Wear Under a Sleep Sack? A Simple Layering Guide
baby clothing

What Should My Baby Wear Under a Sleep Sack? A Simple Layering Guide

Wondering whether your baby needs a onesie, pajamas, or just a diaper under a sleep sack? Here's how to think about layers without overcomplicating bedtime.

baby bedtimeWhy Does My Baby Hate the Sleep Sack? 7 Things to Try

Why Does My Baby Hate the Sleep Sack? 7 Things to Try

Your baby was perfectly happy in your arms—but the second the sleep sack goes on, the crying starts. Here are seven things to check before giving up on the sleep sack.

baby sleep temperatureWhy Is My Baby Sweating While Sleeping?

Why Is My Baby Sweating While Sleeping?

If your baby wakes up sweaty, has damp hair, or feels hot during sleep, you may wonder whether they are too warm. Here’s how to check and what to change.

baby sleepwearShould Baby Wear a Sleep Sack for Naps? A Parent's Guide

Should Baby Wear a Sleep Sack for Naps? A Parent's Guide

Wondering if your baby can wear a sleep sack for naps? Learn when a sleep sack can work for daytime sleep, how to choose the right TOG, and what parents should check before every nap.

baby sleepwearWhen Should You Switch to a Walker Sleep Sack? A Parent's Guide

When Should You Switch to a Walker Sleep Sack? A Parent's Guide

Wondering when to switch from a standard sleep sack to a walker sleep sack? Learn how crawling, standing, cruising, and early walking can change your baby's sleepwear needs, and what features to lo...

baby sleep sackWhen Should Your Baby Switch to a Walker Sleep Sack? A Parent’s Guide

When Should Your Baby Switch to a Walker Sleep Sack? A Parent’s Guide

Wondering if your baby is ready for a walker sleep sack? Learn how developmental stages like standing, cruising, and walking can influence the type of sleepwear parents choose.