SleepSack Wearable Blanket TOG 1.5 vs TOG 0.5: When to Use Each Rating

Choosing the right sleep sack for your baby can feel confusing, especially when you see terms like TOG 1.5 and TOG 0.5. These numbers aren't just marketing jargon — they directly affect how warm your baby sleeps and how safe that sleep is. The SleepSack Wearable Blanket from HALO comes in multiple TOG ratings, and knowing which one to use can help prevent overheating (a known SIDS risk factor) while keeping your little one comfortable.

In this guide, we'll break down the difference between the Wearable Blanket 100% Cotton TOG 0.5 and the SuperSoft Bamboo Wearable Blanket TOG 1.5, explain when to choose each rating, and give you a simple temperature guide to follow. Whether you're a first-time parent or adding to your stash, this comparison will help you make an informed decision.

What Does TOG Mean for Baby Sleep Sacks?

TOG stands for 'Thermal Overall Grade' — a standard measurement of insulation. In simple terms, a higher TOG means more warmth. For baby sleep sacks, TOG ratings help parents match the garment to the nursery temperature, just like you'd choose a thicker or thinner blanket for yourself.

The two most common ratings are TOG 0.5 (lightweight) and TOG 1.5 (medium weight). A TOG 0.5 sleep sack is ideal for warmer rooms (24–27°C / 75–80°F), while a TOG 1.5 works best in cooler conditions (18–23°C / 65–73°F). Using the wrong TOG can lead to discomfort or overheating, so it's worth understanding the difference before you buy.

• TOG 0.5: Lightweight, single-layer cotton or muslin, best for warm weather or heated homes.
• TOG 1.5: Medium weight, often with bamboo or cotton fill, suitable for cooler rooms and year-round use in temperate climates.

Wearable Blanket 100% Cotton TOG 0.5: Best for Warm Sleepers and Hot Climates

The Wearable Blanket 100% Cotton TOG 0.5 is HALO's lightest wearable blanket. Made from soft, breathable cotton, it's designed for babies who sleep warm or for nurseries that are kept on the warmer side. Because it has minimal insulation, it reduces the risk of overheating while still providing the safety of a wearable blanket (no loose bedding in the crib).

This TOG 0.5 version is also a great choice for summer months or if you live in a hot, humid climate. You can pair it with a short-sleeve onesie or just a diaper, depending on the temperature. Many parents keep a TOG 0.5 sleep sack on hand for travel, since hotel rooms and relatives' homes can be unpredictable.

• Ideal room temperature: 24–27°C (75–80°F)
• Recommended clothing underneath: short-sleeve onesie or diaper only
• Fabric: 100% cotton, lightweight and breathable

SuperSoft Bamboo Wearable Blanket TOG 1.5: The Year-Round Workhorse

The SuperSoft Bamboo Wearable Blanket TOG 1.5 offers more insulation thanks to its bamboo-blend fabric, which is naturally temperature-regulating and moisture-wicking. This makes it a versatile choice for most homes, especially during fall, winter, or air-conditioned summer nights. The TOG 1.5 rating provides enough warmth without being bulky, so your baby can still move comfortably.

Bamboo fabric is also hypoallergenic and gentle on sensitive skin, making this a favorite for babies with eczema or allergies. While it's warmer than the TOG 0.5, it's not as heavy as a TOG 2.5 (often used in very cold climates). For many parents, the TOG 1.5 is the only sleep sack they need year-round, simply adjusting the layers underneath.

• Ideal room temperature: 18–23°C (65–73°F)
• Recommended clothing underneath: long-sleeve onesie or footed pajamas
• Fabric: bamboo-rayon blend, soft and thermoregulating

How to Choose Between TOG 0.5 and TOG 1.5: A Practical Guide

Start by checking the temperature in your baby's room with a reliable thermometer. If the room is consistently above 24°C (75°F), go with the TOG 0.5. If it's between 18–23°C (65–73°F), the TOG 1.5 is a better fit. For rooms below 18°C (65°F), you might need a TOG 2.5 or layer a TOG 1.5 with warmer pajamas — but always avoid overheating.

Also consider your baby's personal thermostat. Some babies run hot and may prefer the TOG 0.5 even in slightly cooler rooms, while others need the extra warmth of TOG 1.5. A simple check: feel the back of your baby's neck. If it's sweaty, they're too warm; if it's cool, add a layer. Never judge by hands or feet, as they're often cooler.

• Use a nursery thermometer to get an accurate room temperature.
• Dress baby in one more layer than you'd wear comfortably.
• When in doubt, choose the lighter TOG — you can always add a onesie underneath.

Can You Use Both TOG Ratings in Your Sleep Sack Rotation?

Absolutely. Many parents keep both a TOG 0.5 and a TOG 1.5 SleepSack wearable blanket on hand to adapt to changing seasons or unexpected temperature swings. For example, you might use the TOG 0.5 during summer and switch to the TOG 1.5 as autumn arrives. Having both ensures your baby sleeps safely and comfortably year-round.

If you're building a baby registry or starting your sleep sack collection, consider starting with the TOG 1.5 if you live in a temperate climate, as it covers a wider temperature range. Add a TOG 0.5 later if you find your baby is a warm sleeper or if you travel to warmer places. Both are machine washable and durable, so they'll last through multiple seasons.

• TOG 0.5: best for summer, warm nurseries, and hot sleepers.
• TOG 1.5: best for spring/fall, air-conditioned rooms, and year-round use.
• Rotating between the two gives you flexibility without buying multiple specialty sacks.

Choosing between a SleepSack Wearable Blanket TOG 1.5 and TOG 0.5 comes down to your baby's room temperature and their individual comfort. The Wearable Blanket 100% Cotton TOG 0.5 is perfect for warm conditions, while the SuperSoft Bamboo Wearable Blanket TOG 1.5 offers cozy warmth for cooler rooms. By understanding TOG ratings and checking your nursery temperature, you can keep your baby safe, comfortable, and sleeping soundly all year long.