Mid-Season Sleep Sacks, Nests & Wear

Discover the perfect balance of warmth with our mid-weight sleep sack collection. It includes our signature fleece sleep sack, designed for standard nursery temperatures. As a safe wearable blanket, this baby sleep bag replaces loose bedding, keeping your infant secure and cozy all night long.

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baby dee dee sleep nest lite heather gray navy
baby dee dee sleep nest lite gray stripes

Sleep Nest Lite

From $23.19

sleep nest basic almond cream
Sleep Nest Basic

Sleep Nest Basic

From $21.95

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Sleep Nest Air
baby deedee sleep nest muslin - coconut (white and grey)

Sleep Nest Air

From $22.99

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Mid-Weight Comfort: Fleece Sleep Sacks & Wearable Blankets

Wrap your child in just the right mix of warmth and breathability. At Baby DeeDee, we designed our mid-weight sleep sack collection to be the best year-round option for standard nursery temperatures. Our selection ensures a restful night's sleep for the whole family. It provides the comfort of a high-quality fleece sleep sack that keeps your baby warm without the overheating risks linked to heavy winter duvets.

The Versatile Fleece Sleep Sack

Your baby deserves a comfortable sleep environment that fits the room. Our fleece sleep sack works as a high-quality wearable blanket. It gives infants the warmth they need while still being breathable for year-round use. These sacks are the perfect "Goldilocks" choice—not too heavy, not too light. They feature our unique shoulder-snap design, which makes midnight diaper changes quick and easy while keeping your baby sound asleep.

Safety and Security in Every Stitch

Moving away from swaddling is an important step, and safety is crucial. Our mid-weight sleep sack is designed to replace loose bedding, which removes the risk of suffocation from blankets in the crib. The secure fit keeps the sack in place, even for active sleepers who kick and roll. The generous bell shape offers plenty of room for healthy hip development, helping your little one sleep safely and comfortably all night.

The Ideal Weight for Every Season

Finding the right balance between summer heat and winter chill can be tough. Our mid-season collection fits that need perfectly. We use high-quality polar fleece with a TOG rating of 1.2, designed for standard room temperatures between 68 and 72°F. This means that whether it’s a cool autumn evening or a mild spring night, your newborn stays at the right body temperature. This helps prevent wake-ups from cold toes and reduces the risk of overheating.

Frequently Asked Questions

When should I switch from a sleep sack to a sleeping jumper?

It is important to consider moving a baby to a baby sleep jumper when your baby starts to pull up to a standing position or walk. A mid-weight sleep sack works well for a crib-bound baby. However, a jumper has holes in its legs that allow toddlers to move around in cribs without tripping.

What should my baby wear underneath a onesie sleep sack?

What you put underneath will depend on the room temperature and the TOG of your sack. For a typical fleece sleep sack (1.2 TOG), you will usually need a long-sleeve bodysuit or footed PJs underneath. This wearable blanket is intended to be your baby’s only blanket, so change the base layers to keep them comfortable.

Are baby sleeping jumpers safe for walking?

Yes. Our baby sleeping jumper, designed for toddlers who are starting to stand, crawl, and walk, will attract your little explorer. This smart design features ankle cuffs that allow your child to move safely and freely in their crib or bedroom. It offers the same warmth as a fleece sleep sack but eliminates the trip hazard.

Why use a wearable blanket instead of a regular blanket?

The loose blankets in the crib can create risks of suffocation or trapping. A mid weight sleep sack solves these problems by keeping the "blanket" securely on your baby and their face clear. The baby also cannot kick off the covers, which helps them stay warm and sleep well through the night.

How do I choose the right size?

Sizing depends on weight and height, but most importantly, it is not based solely on age. A proper fit is crucial for safety. The neck hole should be snug enough to prevent your baby's head from slipping down inside. Whether you are choosing a fleece sleep sack or a jumper, always check our size chart to make sure you get a secure and comfortable fit.