Nanit Smart Baby Monitor | Tracks Sleep and Breathing

How to Choose the Right Nanit Cammies for Your Baby

How to Choose the Right Nanit Cammies for Your Baby

By Nanit Smart Baby Monitor | Tracks Sleep and Breathing | Published: 2026-09-07

Category: Buying Guides

Learn how to pick the right Nanit Cammies for your baby based on size, age, and sleep habits. Get practical fit tips and understand when to choose a sleeping bag instead.

Quick answer

To choose the right Nanit Cammies, start by measuring your baby's weight and comparing it to the size chart. Then consider their age and sleep habits: cammies work well for babies who are ready to move beyond swaddling, while a sleeping bag is better for those who need extra warmth or are transitioning from a swaddle. If you need multiple sizes for growth, a 4-pack can be a practical choice.

Cammies
Cammies

Choosing the right sleepwear for your baby is a key part of creating a safe and comfortable sleep environment. Nanit Cammies are a popular option for babies who are moving beyond the swaddle stage, but with so many sizes and styles available, it can be tricky to know which pair will fit best. This guide will walk you through the important factors—size, age, and sleep preference—so you can make a confident choice.

We'll also compare cammies to the Nanit Breathing Wear Quilted Sleeping Bag to help you decide between the two. Plus, we'll share practical fit tips to ensure your little one sleeps soundly and safely.

Breathing Wear Quilted Sleeping Bag
Breathing Wear Quilted Sleeping Bag

Understanding Nanit Cammies: Features and Fit

Nanit Cammies are designed to be worn as a two-piece set, typically consisting of a top and bottoms, and are part of Nanit's Breathing Wear line. They are made from soft, breathable fabric and are intended for babies who are transitioning out of swaddling. The key benefit is that they allow your baby's arms and legs to move freely while still providing a lightweight layer of warmth during sleep.

Fit is crucial for any sleepwear, but especially for breathing wear because the fabric needs to be close enough to detect breathing motion without being too tight. Always choose the size that matches your baby's current weight and age. If you are between sizes, it's generally safer to choose the larger size to avoid tightness. Check the product size chart before ordering, and remember that every baby grows at their own pace, so weigh your baby regularly to ensure the best fit.

  • Measure your baby's weight and height before choosing a size.
  • If between sizes, opt for the larger size for comfort.
  • Check for a snug but not restrictive fit around the torso.

Nanit Cammies vs. Breathing Wear Sleeping Bag

One of the most common questions parents have is whether to choose cammies or a sleeping bag. The answer depends on your baby's age and sleep habits. Cammies are ideal for older babies who are more active during sleep and appreciate the freedom to move their limbs. They are also great for warmer climates or seasons because they provide less insulation than a quilted bag.

The Nanit Breathing Wear Quilted Sleeping Bag (2.5 TOG) is a better choice for post-swaddle babies who need extra warmth, especially in cooler months. It offers the same breathing monitoring benefits but with a cozier, more secure feel. Some parents find that a sleeping bag helps babies sleep better because it prevents them from startling themselves awake with sudden arm movements.

  • Choose cammies for warm climates or for babies who move a lot.
  • Choose a sleeping bag for cooler temperatures or as a swaddle transition aid.
  • Consider your baby's sleep style: some prefer the freedom, others the security.

Fitting Tips for the Perfect Nanit Cammies Size

When you receive your Nanit Cammies, do a quick fit check: the fabric should be snug around the torso without leaving red marks on the skin. The sleeves should end at the wrists, and the leg openings should sit comfortably at the ankles. If the cammies bunch up or twist, they may be too big. If they pull across the chest or seem to restrict movement, they are too small.

Babies grow quickly, so it's wise to have the next size ready. Buying a 4-pack of cammies can be convenient because you'll always have a clean pair on hand, and you can rotate sizes as your baby grows. Just be sure to wash them according to the care instructions to maintain the fabric's breathability and shape.

  • Look for a snug fit that leaves no marks on the skin.
  • Sleeves should end at wrists and leg openings at ankles.
  • Have the next size ready in advance for quick growth spurts.

Decision Rules for Choosing Nanit Cammies

  • By Baby's Age: For newborns under 3 months, consider the Breathing Wear Swaddle. For older babies ready to transition out of the swaddle, cammies are ideal. Match the product to your baby's developmental stage.
  • By Sleep Temperature: In warm months or heated rooms, cammies are lightweight. For cooler nights, choose a sleeping bag with a higher TOG rating. Keep the room temperature and TOG in mind to prevent overheating.
  • By Sleep Style: If your baby moves around a lot or doesn't like being confined, cammies offer freedom. If your baby startles easily, a sleeping bag provides a secure feel. Observe your baby's sleep preferences and choose accordingly.

Product Facts

  • Breathing Wear Quilted Sleeping Bag: Our sensor-free Breathing Motion Monitoring gives you every breath streamed directly to you. Great for post-swaddle babies, our premium-quality Quilted Sleeping Bag (2.5 TOG) keeps little ones comfy all year round. If your baby needs extra warmth or you're transitioning from a swaddle, this bag offers a cozy, secure option.
  • Breathing Wear Swaddle: Monitor your baby’s breathing and help them sleep more soundly with our soft, secure Swaddle—a Breathing Wear option for back-sleeping newborns who need extra soothing and comfort. For newborns who still prefer a swaddle, this provides the same breathing monitoring in a familiar swaddle design.

Who Should Choose Nanit Cammies?

Best for

  • Babies who have outgrown swaddling and need more movement freedom.
  • Parents in warm climates or during summer months who want a light layer.

Not for

  • Newborns who still need a swaddle for soothing.
  • Cold sleepers who need more insulation; a sleeping bag may be better.

Choosing the right Nanit Cammies comes down to your baby's size, age, and sleep style. Use the fit guidance and decision rules above to make a confident choice that supports better sleep. And remember, if you need more warmth, the Breathing Wear Quilted Sleeping Bag is a great alternative.

Shop Related Products

Breathing Wear Sleeping Bag

Breathing Wear Sleeping Bag

$17.50 $34.99

Shop Now
Breathing Wear Swaddle

Breathing Wear Swaddle

$15.00 $29.99

Shop Now
Breathing Wear Pajamas

Breathing Wear Pajamas

$15.00 $29.99

Shop Now
Breathing Band™

Breathing Band™

$9.99 $19.99

Shop Now