What to Look for in a Kids Sleep Sack

Quick answer

When choosing a kids sleep sack, focus on safety certifications, fabric breathability, proper fit (not too loose or tight), and ease of cleaning. A woven sleep sack offers a balance of comfort and durability for babies and toddlers.

How to choose the right sleep sack: decision rules

• Check the weight and TOG rating: Sleep sacks are often rated by TOG (Thermal Overall Grade) to indicate warmth. For a woven sleep sack, look for a TOG rating appropriate for your room temperature: 0.5 TOG for warm rooms (24-27°C), 1.0 TOG for moderate (20-24°C), and 2.5 TOG for cooler rooms (16-20°C). If the product doesn't list a TOG, treat it as a lightweight layer and adjust bedding accordingly.
• Verify the fit around the neck and armholes: The armholes should be snug enough that the baby cannot slip their arms inside the sack, but not so tight that they restrict movement. A good rule: you should be able to slide two fingers between the sleep sack and your child's chest. Avoid sacks with loose neck openings that could ride up over the face. Always measure your child's chest circumference and compare it to the sleep sack's dimensions before buying.
• Choose a washable, durable fabric: Babies and toddlers generate plenty of mess, so look for a sleep sack that can withstand frequent machine washing. Woven fabrics like those used in Bobo Choses sleep sacks are generally more resilient than knits and resist pilling. Check the care label for washing instructions—most woven sacks can be machine washed on a gentle cycle and tumble dried low.
• Consider the season and room temperature: A single sleep sack may not work year-round unless it's a lightweight woven version that can be layered with pajamas. For warmer months, choose a sack with short sleeves or no sleeves. For cooler months, opt for long sleeves or pair the sack with a onesie. Always check your child's neck or back for signs of overheating. If you live in a climate with distinct seasons, you may need two sleep sacks with different TOG ratings.

Product highlights

• SB126AH044 Strawberry all over woven sleep sack: This Bobo Choses sleep sack features a charming strawberry all-over pattern, made from woven fabric for cozy comfort. The playful pattern adds visual appeal to bedtime, while the woven construction offers breathable durability for nightly use.

  

• SB126AH043 Cool Radish all over woven sleep sack: The Cool Radish all-over woven sleep sack is designed for newborns, with a nature-inspired pattern and breathable woven fabric. The breathable woven fabric helps prevent overheating, and the one-size-fits-most design simplifies sizing for growing babies.

  

Who is this guide for?

Best for

• Parents looking for a first sleep sack for a newborn or infant
• Caregivers who want a breathable, durable woven fabric option
• Anyone replacing an old sleep sack and wanting clear safety and fit criteria

Not for

• Parents seeking a sleep sack for a toddler over 3 years old (check size limits)
• Those looking for a weighted sleep sack or one with special features like swaddle transition