1.7 TOG vs 1.0 TOG Sleep Bag: Which Warmth Level?
By Organic Baby & Toddler Clothes | Nursery & Decor | Pehr | Published: 2026-10-25
Category: Comparisons
Compare 1.7 TOG and 1.0 TOG sleep bags to find the right warmth for your baby. Learn room temperature ranges, fabric differences, and when to choose each.
Quick answer
Choose a 1.7 TOG sleep bag for room temperatures 69–74°F (21–24°C) and a 1.0 TOG bag for warmer rooms 75–81°F (24–27°C). The right TOG rating helps your baby sleep safely and comfortably without overheating.
What TOG means for baby sleep
TOG (Thermal Overall Grade) measures a fabric's insulation. A higher number means more warmth. Sleep bags replace loose blankets and reduce SIDS risk, but choosing the right TOG is essential: too warm and baby may overheat, too cool and they may wake. Always check room temperature with a thermometer and dress baby in appropriate layers underneath.
Key differences between 1.7 and 1.0 TOG
The 1.7 TOG sleep bags (like Secret Garden, Floret, Zodiac) have a GOTS certified organic cotton exterior and hypoallergenic polyester fill, making them ideal for cooler nights and transitional seasons. The 1.0 TOG Sailor Stripe bag is double-layered organic cotton knit with no extra fill, designed for all-season comfort in warmer rooms. Both feature easy-access zippers, but the 1.0 TOG uses a full-length invisible zipper while the 1.7 TOG has a side-to-bottom zipper for diaper changes.
1.7 TOG vs 1.0 TOG: Trade-offs at a glance
- Room temperature range: 1.7 TOG: 69–74°F (21–24°C). 1.0 TOG: 75–81°F (24–27°C). Measure your nursery temperature before deciding.
- Fabric and insulation: 1.7 TOG uses organic cotton exterior + polyester fill for extra warmth. 1.0 TOG is double-layered organic cotton knit with no fill — lighter and more breathable.
- Zipper style: 1.7 TOG: side-to-bottom zipper for diaper changes. 1.0 TOG: full-length invisible front zipper — smooth but requires more undressing for changes. If you do many night changes, the side zipper on 1.7 TOG is more convenient.
Product facts
- 1.7 TOG Sleep Bag - Secret Garden: 1.7 TOG Sleep Bag - Secret Garden: GOTS certified organic cotton exterior, hypoallergenic polyester fill, side-to-bottom zipper, underarm snaps on sizes 0–9 months. The side-to-bottom zipper makes middle-of-the-night diaper changes quick without fully undressing baby.
1.7 TOG Sleep Bag - Secret Garden - Sailor Stripe Front Zipper 1.0 TOG Sleep Bag - Tea Rose: Sailor Stripe Front Zipper 1.0 TOG Sleep Bag - Tea Rose: GOTS certified 100% organic cotton double-layered knit, full-length invisible zipper, reverse stripe interior. The double-layer organic cotton provides breathable warmth for warmer rooms, and the invisible zipper prevents irritation against baby's skin.
Sailor Stripe Front Zipper 1.0 TOG Sleep Bag - Tea Rose
Which sleep bag should you choose?
Best for
- Cooler nurseries (69–74°F) or transitional seasons: 1.7 TOG Sleep Bag
- Warmer rooms (75–81°F) or year-round mild climates: 1.0 TOG Sailor Stripe Sleep Bag
Not ideal for
- Very hot rooms above 81°F — consider a lighter 0.5 TOG sleep bag or just a diaper and onesie
- Very cold rooms below 69°F — layer a long-sleeve onesie under the 1.7 TOG or use a higher TOG bag
