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Zipadee-Zip vs. Flying Squirrel: Which Sleep Sack Is Right for Your Baby?

Zipadee-Zip vs. Flying Squirrel: Which Sleep Sack Is Right for Your Baby?

By Blooming Baby | Essentials for Every Age: Swaddles, Pacifiers ... | Published: 2026-08-28

Category: Buying Guides

Compare the Zipadee-Zip and Flying Squirrel pajama to find the best sleep sack for your baby. We break down fit, warmth, and transition features.

When it comes to baby sleep sacks, the Zipadee-Zip and Flying Squirrel pajama are two popular choices that serve different needs. Both are designed to keep your little one cozy and safe, but they have distinct features that might make one a better fit for your family.

In this buying guide, we'll break down the key differences between these two sleep sack styles, including fit, warmth, and how they support the transition from swaddling. By the end, you'll have a clear idea of which one to choose for your baby's sleep routine.

What Are the Zipadee-Zip and Flying Squirrel?

The Zipadee-Zip is a wearable blanket that gives babies room to move while still providing a snug, secure feel. It has a unique starfish-like shape with wings and a zippered body, which helps reduce the startle reflex without fully restricting movement. It's often used as a swaddle transition product, helping babies adjust to sleeping without a traditional swaddle.

The Flying Squirrel pajama takes a different approach. It's a full-body sleep sack with a zipper that runs diagonally, making diaper changes easier. The design allows for more freedom of movement, and it's often chosen for babies who are already comfortable with sleep sacks and need a bit more room to stretch and roll.

  • Zipadee-Zip: Wings for self-soothing, snug fit, ideal for swaddle transition.
  • Flying Squirrel: Full-body sack, diagonal zipper, more room to move.

Key Differences: Fit, Warmth, and Transition

Fit is one of the biggest differences. The Zipadee-Zip is fitted with a cinched waist and elastic cuffs, which gives a cozy, hug-like feel. This can be comforting for babies who are used to being swaddled. The Flying Squirrel, on the other hand, is roomier, with no waist cinch, so it allows more kicking and stretching, which some babies prefer as they get older.

Warmth is another consideration. Both come in lightweight and fleece versions, so you can choose based on your climate and season. For example, the Sleeping Baby Animal Friends Zipadee-Zip Swaddle Transition in fleece is great for colder nights, while the lightweight Sleeping Baby Robots Zipadee-Zip Swaddle Transition is better for warmer rooms. Similarly, the Straight & Arrow Flying Squirrel Pajama in fleece offers extra warmth for winter.

Sleeping Baby Animal Friends Zipadee-Zip Swaddle Transition
Sleeping Baby Animal Friends Zipadee-Zip Swaddle Transition

When it comes to transition, the Zipadee-Zip is specifically designed to help babies move from a swaddle to a sleep sack. The wings provide gentle resistance, which can ease the startle reflex. The Flying Squirrel is less about transition and more about providing a comfortable sleep sack for babies who are already used to sleeping with their arms free.

  • Choose Zipadee-Zip if you're transitioning from a swaddle.
  • Choose Flying Squirrel if your baby already sleeps well without a swaddle.
  • Both come in lightweight and fleece options for seasonal flexibility.

How to Choose: Consider Your Baby's Age and Sleep Habits

Age and sleep habits play a big role. If your baby is under 6 months and still showing signs of the startle reflex, the Zipadee-Zip might be a better choice because it helps contain those jerky movements. If your baby is older, more mobile, and rolls around a lot, the Flying Squirrel's roomier design could be more comfortable.

Also think about how your baby sleeps. Some babies love the feeling of being hugged, while others prefer to stretch out. If your baby is a stomach sleeper, the Flying Squirrel's flat design may be more comfortable. If your baby likes to suck on their hands, the Zipadee-Zip's wings allow easy access to hands for self-soothing.

Another tip: consider the ease of diaper changes. The Flying Squirrel's diagonal zipper makes nighttime changes simpler, which can be a big plus for sleep-deprived parents. The Zipadee-Zip's zipper is vertical, which is still convenient but may require a bit more wiggling.

  • For self-soothing and hand access, Zipadee-Zip is a plus.
  • For easy diaper changes, the Flying Squirrel's diagonal zipper helps.
  • For stomach sleepers, the Flying Squirrel's flat design may be better.

Practical Tips for Making Your Choice

Before you buy, check your baby's current sleep setup. If they're in a swaddle and you're ready to transition, the Zipadee-Zip is a natural next step. If they're already in a sleep sack and just need an upgrade, the Flying Squirrel could be the way to go.

Also, consider the temperature of your baby's room. Use the TOG rating as a guide—lightweight versions are usually around 0.5 TOG, while fleece versions are warmer. This will help you pick the right fabric for the season.

Finally, don't forget about sizing. Both the Zipadee-Zip and Flying Squirrel come in different sizes, so measure your baby's weight and height to get the best fit. A proper fit is essential for safety and comfort.

  • Transitioning from swaddle? Go with Zipadee-Zip.
  • Already in a sleep sack? Consider Flying Squirrel.
  • Check the TOG rating to match room temperature.

Both the Zipadee-Zip and Flying Squirrel pajama are excellent sleep sack options, but they serve different purposes. If you're transitioning your baby out of a swaddle, the Zipadee-Zip is your best bet. If your baby is ready for more freedom, the Flying Squirrel offers comfort and convenience. Take into account your baby's age, sleep habits, and the room temperature to make the right choice for sweet dreams.

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