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Best Sleep Sacks for Newborns 2026: TOG Guide
by Shopify API
on Jun 26 2026
The sleep sack is one of the most important baby products you'll buy — it keeps your baby warm safely, without loose blankets in the crib. But navigating TOG ratings, sizing, and materials can be confusing for new parents. This guide covers everything you need to know.
What Is TOG?
TOG stands for "Thermal Overall Grade" — it's a measurement of a fabric's thermal resistance, or how well it insulates. A higher TOG number means more warmth. The scale used for baby sleep products typically runs from 0.2 to 3.5.
TOG Guide by Season and Room Temperature
Here's a practical guide to choosing the right TOG:
0.2–0.5 TOG: Summer, or rooms that stay above 75°F (24°C). Dress baby in a short-sleeve onesie underneath.
1.0 TOG: Spring/fall, or rooms between 68–74°F (20–23°C). Dress baby in a long-sleeve onesie.
2.0–2.5 TOG: Winter, or rooms below 68°F (20°C). Dress baby in footed pajamas underneath.
3.5 TOG: Very cold rooms or regions with harsh winters. Use with caution and monitor for overheating.
Overheating is a SIDS risk factor — when in doubt, go lighter. Feel the back of baby's neck; it should feel warm but not sweaty.
Sizing Sleep Sacks
Sleep sacks are typically sized by weight rather than age. Most newborn sleep sacks fit babies 7–13 lbs, with the neck and armhole openings sized to prevent the sack from riding up over baby's face. A sleep sack that's too large is a safety hazard — the neck opening should be snug enough that it can't slip over baby's head.
Top PFAS-Free, Organic Picks
For summer (0.5 TOG): Look for OEKO-TEX certified bamboo options — bamboo's moisture-wicking properties are perfect for warm nights. For year-round (1.0 TOG): GOTS certified organic cotton is a classic, breathable choice. For winter (2.5 TOG): Quilted organic cotton or bamboo fleece options provide real warmth without the need for additional blankets.
Features to Look For
Two-way zippers make middle-of-the-night diaper changes much easier. Shoulder snaps allow for easy dressing. Roomy bottom sections let little legs move freely, which supports healthy hip development. Avoid sleep sacks with hoods or extras near the face.
Shop at Everetts Place
Every product is hand-vetted for safety certifications — GOTS, OEKO-TEX, PFAS-free, and more.
→ PFAS-Free Sleep Sacks Collection
→ Temperature Regulating Bamboo Sleepwear Collection
→ 1.5 TOG Sleep Sack
→ Newborn Essentials Gift Sets Collection
Shop Sleep Sacks at Everett's Place
1.5 TOG Sleep Sack — ideal year-round TOG rating, organic cotton, available in multiple colors
Bamboo 1.5 TOG Sleep Sack — Sweet Bamboo quilted design, silky bamboo viscose for sensitive skin
Baby Bear Sleep Sack — 100% organic cotton, adorable bear print, 2-way zipper for easy nighttime changes
Adventure is Calling Sleep Sack — organic cotton with snap bottom, grows with your baby
Bamboo Classic Sleep Sack (Non-weighted) — lightweight bamboo, perfect for warmer sleep environments
📚 Helpful Resources from Everetts Place
🌡️ TOG Calculator — find the right warmth for your baby
😴 Shop Sleep Sacks at Everetts Place
✨ Everetts Rewards — earn points on every purchase
Shop the related collections: Sweet Bamboo, Sleep Sacks, and Newborn Essentials Gift Sets.