Safety Guidelines & Sources

Last updated: July 17, 2026

TinyLayers provides general dressing guidance only. It does not replace medical advice. Recommendations are based on common sleepwear warmth guidance and safe-sleep recommendations from trusted public health sources.

What TOG means

TOG means Thermal Overall Grade. It is a warmth rating for sleep sacks. Higher TOG means warmer. TinyLayers shows plain-language layers first, with TOG labels as a helper. TinyLayers never recommends 4.0 TOG.

Why room temperature matters

Babies sleep in the room, not the weather. A thermometer near the crib beats an outdoor forecast every time — outdoor weather is never used to guess the room.

The chest check

Feel baby’s chest or back of neck 10–15 minutes after dressing. Warm and dry is right. Hands and feet often feel cool — that’s normal.

Safe sleep reminders

• Back to sleep, on a firm flat surface
• No loose blankets, pillows, or bumpers in the crib
• No hats indoors during sleep
• Stop swaddling at the first signs of rolling
• Keep the room comfortably cool, not hot

Car seats & layers

Thin layers only under the harness. No bulky coats or snowsuits under straps — lay a blanket over the buckled straps instead. In warm weather, check metal buckles before strapping in and never leave baby in a parked car.

Carriers & strollers

In a carrier, your body heat and the carrier fabric count as a layer — dress baby one layer lighter than for the stroller, in any season. Never drape a blanket or muslin over a stroller for shade: even thin fabric traps heat inside. Use the canopy or a clip-on parasol and keep air moving.

Weather data

Outdoor weather and severe-weather alerts are provided by Apple Weather, with the Norwegian Meteorological Institute (MET Norway, CC BY 4.0) as fallback. Weather is only used for outdoor modes — never to guess your room temperature.

• Apple Weather — legal attribution
• MET Norway — data license (CC BY 4.0)

Limits of this guidance

Recommendations reflect common TOG sleepwear charts and safe-sleep guidance from public health sources, including the AAP. Every baby is different — when in doubt, ask your pediatrician. Fever, premature birth, or medical complexity can change how a baby regulates temperature; follow your clinician’s guidance in those cases.

Sources

• AAP / HealthyChildren — safe sleep
• AAP / HealthyChildren — dressing for weather
• AAP / HealthyChildren — winter car seat safety
• AAP / HealthyChildren — sun & heat safety
• Red Nose — dangers of covering the pram

Questions

Anything unclear, or a source you think we should add: support@twobricklabs.com