What are TOGs?

Welcome to the TOG Guide! If you've ever bought a sleep sack or suit, you've seen the term TOG (Thermal Overall Grade). This rating is the most critical measure of safety and comfort when choosing your baby’s sleepwear, as it tells you exactly how warm the fabric is. Understanding TOG prevents dangerous overheating and ensures your baby is cozy all night long.

What Exactly is a TOG Rating?

The TOG rating is a standardized measurement of thermal resistance, or how effectively a textile product traps heat. Essentially, the higher the TOG number, the warmer the sleepwear is. Please refer below picture for recommended room temperature while using vos&bos products.

Why TOG is More Important Than Fabric Type

You can't determine warmth just by feeling a fabric. A thick fleece might feel warm, but a thin, high-tech fiber (like a Merino wool blend) might have a higher TOG rating because its structure traps heat more efficiently. The TOG system eliminates this guesswork, giving you a precise, quantifiable measure of insulation.

  • Safety First: Using the correct TOG for the room temperature is a key recommendation from pediatric safety experts to prevent overheating, a known risk factor for SIDS.

  • Consistency: It ensures a comfortable, consistent temperature for your baby, reducing night wakings caused by being too hot or too cold.

Matching TOG to Room Temperature

Choosing the correct TOG depends entirely on the ambient temperature of your child's room, not the season or the outside weather.

vos&bos recommended TOG usage

0.5 TOG

The airy 0.5 TOG sleeping bags/sleep suits are perfectly suited for hot summer days with temperatures above 23°C. To prevent unnecessary sweating, a light bodysuit underneath is sufficient.

Lite Bamboo Sleep Suit 0.5 TOG

1.0 TOG

The light 1.0 TOG sleeping bags/sleep suits are perfect for room temperatures between 21-24°C. Depending on the warmth and your baby's preference, simply a short or long-sleeved bodysuit underneath will be sufficient.

Lite Bamboo Sleep Suit 1.0 TOG

1.5 TOG

You can use our super soft and padded 1.5 TOG sleeping bags/sleep suits in temperatures ranging from 19-22°C. They're particularly well suited for the season change. For extra warmth, pair with a long or short-sleeved bodysuit.

Related Collection

2.5 TOG

Perfect for temperatures from 15-20°C (60-68°F), our delightfully soft and padded 2.5 TOG sleeping bags / sleep suits are excellent for cooler weather. Layer with a long or short-sleeved bodysuit or pajamas for added warmth.

Related Collection

3.5 TOG

The extra thickly padded 3.5 TOG sleeping bags/sleep suits are used for cold temperatures of 10-16°C. With pajamas underneath, your baby will stay wonderfully warm.

Bamboo and Wool Sleep Suit 3.5 TOG