Baby Sleep Bag 1.0 TOG in TENCEL™ - Astro Explorers
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A wearable blanket keeps the crib bare the way the AAP wants it — and keeps the warmth on the baby, where the blanket never stays.
Rockets, astronauts, UFOs — and one very small space explorer about to fall asleep.
This is the year-round weight, the one you'll use about nine months of the year in a 69–75°F nursery. It's the everyday workhorse of the line — warm enough for a typical night, light enough that the baby never wakes up overheated.
Material. A TENCEL™ Lyocell shell over a light layer of DuPont™ Sorona insulation, a plant-based fill that holds warmth without bulk.
The print. Soft pink ground with multicolored rockets, astronauts, flying saucers, planets, moons, and small stars.
Construction. Sleeveless on purpose, so your baby sheds heat instead of trapping it. A two-way zipper runs the length of the bag, so a midnight diaper change takes seconds and wakes nobody. The neck and arm openings are bound in soft fabric, not scratchy serged edges, and cut snug — the part that matters most for safe sleep.
Why TENCEL™ for a year-round bag. A 1.0 TOG is worn most nights and washed twice a week, so the fiber has to keep its hand. TENCEL™ Lyocell stays smooth and breathable through heavy laundering and carries heat off the skin instead of trapping it.
Adjacent TOGs in the same print. Room running warm? The 0.5 TOG Muslin Sleep Bag in Astro Explorers covers 75–81°F summer nurseries. Cold nursery in winter? The 2.5 TOG TENCEL™ Sleep Bag picks up at 61–68°F.
Sizing. 0–6M (8–18 lb), 6–18M (18–28 lb), 18–36M (28–38 lb). Size to current weight. The 0–6M usually carries a baby through to the 4-month sleep regression; the 6–18M is usually the size your baby wears the longest.
Care. Machine wash cold and tumble dry low. Don't bleach, and don't iron the printed areas. Two or three washes a week is the baby-laundry baseline — TENCEL™ is built for exactly that cadence.
Safety & certification. AAP safe-sleep compliant. Tested to CPSC, CPSIA, and ASTM standards. Material certified to OEKO-TEX Standard 100. Loulou Lollipop is a Certified B Corporation.
Common questions
Why TENCEL™ for this sleep bag instead of muslin?
TENCEL™ Lyocell is a wood-pulp fiber spun in a closed-loop process. It pulls moisture off the skin quickly and stays soft and keeps its look through repeated washing, so we use it in our year-round 1.0 and 2.5 TOG sleep bags, the ones that get washed most. For the lightest warm-weather layers, you might want our products made with Tanboocel® Bamboo Viscose — like the 0.5 TOG sleep bags, swaddles, and crib sheets.
What TOG rating should my baby wear?
Match the TOG to the room. 0.5 TOG for 75–81°F. 1.0 TOG for 69–75°F, the most common nursery temperature in the US. 2.5 TOG for 61–68°F cold nurseries. A nursery thermometer removes the guesswork.
What should baby wear under a 1.0 TOG sleep sack?
A short-sleeve bodysuit at the top end of the range (74–75°F), a long-sleeve bodysuit in the middle (70–73°F), or a sleeper at the cool end (69–70°F). The TOG rating gives you the main warmth; what your baby wears underneath lets you fine-tune from there.
Free US shipping over $65. Free 30-day returns on unworn items in original packaging.
Part of the Big Dreams Sleep System. Sleepers and sleep bags in Astro Explorers are built to layer together through the night — same print, one system. Complete the set with the Tanboocel® Bamboo Viscose 0.5 TOG Sleep Bag and TENCEL™ Sleeper.
Why we recommend TENCEL™
Moisture Wicking
Non-Toxic & Safe
Ultra-Soft On Baby’s Skin
Size Chart for Sleep Bags / Sleepsuits
The following chart is for reference only. Please reach out to our customer service team if you have any questions on the sizes.
Sleep Bags
| Size | Height (in) | Weight (lb) |
|---|---|---|
| 0 - 6 M | 23 - 26" | 10 - 16 lbs |
| 6 - 18 M | 26 - 34" | 16 - 26 lbs |
| 18 - 36 M | 34 - 40" | 26 - 40 lbs |
Sleepsuits
| Size | Height (in) | Weight (lb) |
|---|---|---|
| 6 - 18 M | 29 - 31" | 22 - 27 lbs |
| 18 - 36 M | 31 - 34 | 27 - 32 lbs |
| 3T - 4T | 34 - 37" | 32 - 36 lbs |
Why Parents Love This

Clever Stay Put Design
Baby can't kick it off, meaning fewer wakeups (for them and for you!)

Quick And Easy Diaper Changes
Unzips from the bottom so you never have to fully undress your baby — even at 3am.

Warm & Cozy
Insulated with DuPont™ Sorona® for warmth without trapping heat — safer for sleeping.
94% TENCEL™ Lyocell, 6% spandex
Machine wash cold with like colours
Delicate or gentle cycle
Tumble dry on low heat
Use only non-chlorine bleach
Iron medium
Do not dry clean
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