Flying Squirrel Pajama Sizing Guide: Find the Perfect Fit

Quick Answer

Choose a Flying Squirrel pajama size based on your child's height and weight, not age alone. Aim for a loose fit that allows free movement without excess fabric that could bunch up. If your toddler is between sizes, size up for room to grow, especially if they are tall or active.

Picking the right size for a Flying Squirrel pajama is about more than just comfort. A proper fit keeps your little one safe and cozy throughout the night, whether they're a back sleeper, side sleeper, or a perpetual toss-and-turner. With sizes designed for ages 12 months to 5 years, it's important to understand how the fit should feel and when to move up.

Unlike regular pajamas, this wearable blanket has a loose, starfish-like design that moves with your child. That means your usual clothing sizing instincts might not apply. In this guide, we’ll walk you through the key fit signals, measurement tips, and what to expect as your child grows.

How the Flying Squirrel Fit Works

The Flying Squirrel pajama features a loose fit with ribbed cuffs at the wrists and ankles. Those cuffs are there to keep the fabric from hiking up during sleep, but they don’t mean the rest of the garment should be snug. You want enough room for your toddler to move their arms and legs freely without feeling restricted.

Because the design is based on AAP safe sleep recommendations, it’s not meant to be tight like a swaddle. Think of it as a wearable blanket that your child can move around in. The fit should feel cozy but not confining, with a bit of extra space in the torso and limbs.

• Check that your toddler can easily bend their knees and elbows while wearing it.

Measuring Your Toddler for the Right Size

Before you shop, measure your child’s height and weight. Most sleep sack brands, including Flying Squirrel, base their sizing on these two numbers. While age ranges give you a starting point, a 2-year-old can vary a lot in build, so height and weight are far more reliable.

If you’re between sizes, consider your child’s growth pattern. If they’ve recently had a growth spurt, sizing up may give you more wear time. If they’re on the smaller side and still fitting well in the current size, there’s no need to rush the transition.

• Weigh your toddler and measure their height at home for the most accurate guide.

Signs Your Toddler Needs a Bigger Size

The most obvious sign is that the cuffs are leaving marks on the wrists or ankles, which means the fit is too tight. You might also notice that your child seems uncomfortable or tries to pull the pajama off. If the fabric pulls across the chest or back, that’s another clear indicator it’s time to size up.

On the flip side, if there’s so much extra fabric that it bunches under your child’s body or rides up around their face, the size is too big. A sleep sack that’s overly large can be a safety concern, so always prioritize a fit that stays close to the body without being snug.

• Do a quick fit check during a nap: your toddler should be able to stretch and roll comfortably.

Quick Fit Rules for Flying Squirrel Sizing

• Measure First: Always measure your toddler’s height and weight before ordering. Use those numbers, not just age, to pick the size. This avoids the guesswork and reduces returns. Keep a tape measure and scale handy for a quick check.
• Loose but Not Huge: The fit should be loose enough for free movement but not so big that fabric bunches under the body. If you can pinch more than an inch of extra fabric at the torso, size down. Aim for a fit that allows full range of motion without excess.
• Size Up When in Doubt: If your toddler is between sizes, especially if they are tall or active, choose the larger size. The loose design gives room to grow, and ribbed cuffs help keep sleeves in place. Choose larger when unsure, but always re-check fit for safety.

Flying Squirrel Product Details

• Sleeping Baby Classic Lavender Flying Squirrel Pajama: The Flying Squirrel pajamas double as a wearable blanket, keeping your little one cozy no matter how they toss and turn. Breathable fabric with gentle stretch. Loose fit for plenty of room to grow. Ribbed cuffs at wrists and ankles prevent hiking up during sleep. Designed based on safe sleep recommendations from the AAP. Suitable for little ones 12 months–5 years. Fabric: 96% polyester, 4%... The loose fit and ribbed cuffs are exactly what you’re looking for in sizing: roomy enough for movement, but with cuffs that keep the sleeves in place. The AAP-based design means the fit prioritizes safety, which should be your top consideration when picking a size.
• Sleeping Baby Butterflies Zipadee-Zip Swaddle Transition - Lightweight: The Zipadee-Zip’s unique starfish design provides the cozy, secure feeling of a swaddle without limiting baby’s range of motion. A safer alternative once baby starts to wiggle and roll. Keeps them comfy and covered during naptime and nighttime. Designed based on safe sleep recommendations from the AAP. Suitable for little ones 3 months–3 years. If your toddler is younger or smaller, this lightweight Zipadee-Zip offers a similar starfish fit but with a different sizing range. It’s a good alternative for babies under 12 months who aren’t ready for the Flying Squirrel yet.

Which Size Should You Choose?

Best For

• Toddlers who move a lot during sleep and need a loose, unrestricted fit
• Children between 12 months and 5 years who are growing quickly and may benefit from sizing up

Not For

• Babies under 12 months who may not yet meet the minimum size requirements; consider a Zipadee-Zip instead
• Parents who prefer a snug, fitted sleep sack; the Flying Squirrel’s loose design is intentional

Finding the right Flying Squirrel pajama size is all about balancing comfort, safety, and room to grow. Measure your toddler, pay attention to how the cuffs fit, and don’t be afraid to size up if you’re between sizes. With the right fit, your little one will stay cozy and safe through the night, no matter how much they toss and turn.