Honest Review: Pure Earth Collection Tropical Nights Summer Sleeping Bag
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Why I tried it
As a gentle sleep coach and mother of three, I’m incredibly picky about what I recommend. My work is about helping babies and toddlers sleep better in ways that are developmentally appropriate, respectful and led by the baby’s needs – not by rigid “training” schedules. That means if I talk about a product, it’s because I’ve used it myself, seen its benefits and would confidently suggest it to families I work with.
When the summer heatwave hit this year, my 12-month-old’s sleep took a dip. His room was hovering between 25–29°C, and even the so-called “lightweight” 0.5 TOG sleeping bags we owned were too warm. He’d wake sweaty, restless and uncomfortable. I wanted something that was truly summer-friendly: breathable, safe and gentle on his skin.
Enter the Pure Earth Collection Tropical Nights Sleeping Bag. I’d heard other parents rave about it, but I wanted to put it through a real-life test: hot nights, car journeys and travel. After a solid month of use, I can confidently say this is now the only summer sleep sack I recommend.
What it is
The Tropical Nights Sleeping Bag is designed specifically for hot weather and warm climates. It stands out for a few key reasons:
0.2 TOG rating: the lowest warmth rating available, designed for rooms 20°C and above
100% modal fabric: incredibly soft, breathable, and naturally cooling
Two-way zip: for quick night-time nappy changes without removing the bag
Under-arm poppers: to adjust the fit as your baby grows
One size: fits babies from three months to three years (minimum weight 4.5 kg)
Detachable comforter: safe, removable settling aid
Machine washable and quick drying: practical for daily use
Compact fold: easy to pack for holidays or nights away
First impressions and design
Straight out of the packaging, the fabric struck me. Modal is known to be soft, but this felt like silk, without being slippery or synthetic. Many sleeping bags I’ve handled in the past, even “premium” ones, have a slightly stiff or scratchy texture when brand new. This one was cloud-soft from day one.
The two-way zip felt robust and moved smoothly. The under-arm poppers are positioned well; snug enough to give a secure fit for younger babies, but adjustable to grow with them. I also liked that the colours and patterns are subtle and calming. There are no harsh prints or overly bright designs that can be visually overstimulating for bedtime. And the detachable comforter? Such a clever addition – a small detail that adds an extra layer of comfort and familiarity for little ones.
Performance in real life
During the heatwave:
This bag’s 0.2 TOG rating isn’t just marketing fluff, it makes a huge difference. On 25°C+ nights, my baby stayed cool, his skin stayed dry, and he didn’t wake up clammy. The modal fabric allows airflow and wicks away moisture, which is a lifesaver for babies who run warm or sweat in their sleep. Since switching to the Tropical Nights bag, I’ve noticed he settles back to sleep more easily after brief wake-ups. So he’s clearly more comfortable in the heat.
In the car (the game changer):
This feature alone could justify the purchase. The sleeping bag has a cleverly positioned seatbelt hole that allows you to thread a car seat harness through without removing the bag.
Here’s how it worked for us: after an evening at a friend’s birthday party, I dressed my baby in the sleeping bag before we left. I placed him in the car seat, buckled him through the opening and drove home. He was safe, secure and – crucially – not overheating.
When we got home, I simply unbuckled him and gently transferred him to his cot. No undressing, no temperature shock, no “fully awake at 10:30pm” meltdown. He stayed asleep through the entire process. If you’ve ever tried to change a sleeping baby’s clothes after a car ride, you’ll know how magical this is.
For travel:
Because it’s so lightweight and folds down to almost nothing, this bag is easy to pack for nights away or holidays. It dries quickly after washing, which is great when you don’t have access to a tumble dryer. I took it on a short trip away where the nights were still warm, and it worked perfectly in an unfamiliar sleeping space. The detachable comforter was an added bonus; having that familiar, soft item with him seemed to make settling easier, even in a new environment.
Why TOG rating matters
TOG stands for “Thermal Overall Grade” – essentially, how much insulation a fabric provides. In summer, most “lightweight” bags are still 0.5 TOG or higher, which can be too much in rooms above 23°C. A baby’s ideal sleeping environment should be cool enough to reduce the risk of overheating (a SIDS risk factor) but comfortable enough to avoid chills.
The Tropical Nights bag’s 0.2 TOG is as low as you can go, meaning it’s breathable enough for warm nights but still gives that cosy, secure “enclosed” feeling babies love.
Why modal is a winner
Modal is made from beech tree pulp, making it a plant-based fabric that’s naturally breathable and thermoregulating. It:
Feels softer than cotton (especially over time)
Wicks away moisture
Dries quickly
Maintains softness even after repeated washing
For babies with eczema or sensitive skin, modal’s smooth texture is far less irritating than many cotton blends or synthetics.
Why it works for gentle sleep
My gentle sleep philosophy focuses on creating an environment that supports comfort, predictability and safety – without forcing a rigid schedule. This sleeping bag ticks every box:
Safe (no loose blankets)
Comfortable in warm weather
Practical for night changes and travel
Adaptable over several years
Gentle on sensitive skin
When a sleep product works with your routine instead of against it, bedtime feels so much easier.
Pros and cons
What I love:
Coolest TOG available (0.2)
Ultra-soft, breathable modal
Car-seat friendly for stress-free transfers
Adjustable fit via poppers
Machine washable and quick drying
Long-lasting investment
What to keep in mind:
Higher price point
Sells out quickly in summer
Only one size (but lasts three years!)
Who it’s best for
This sleeping bag is ideal if:
Your baby overheats or sweats at night
You live in a hot or humid climate
You want a summer sleep sack that works in the car
You frequently travel or take overnight trips
Your baby dislikes heavy fabrics or being covered by blankets
You want one bag that lasts multiple years
Final Verdict: 9/10
The Pure Earth Collection Tropical Nights Sleeping Bag has earned its place as my go-to summer sleep solution. It’s safe, breathable, comfortable and genuinely practical – whether you’re navigating a heatwave, going abroad or transferring a sleeping baby from car to cot without fuss. So if you’re serious about keeping your baby cool and comfortable on warm nights, while also making your life easier, I can’t recommend it highly enough.
Why I recommend the Tropical Nights Sleeping Bag
Before partnering with Pure Earth Collection, I put their Tropical Nights Sleeping Bag through a full month of real-life testing with my own family. I only share products I truly believe in – ones that meet my high standards for safety, comfort and gentle sleep support.
I became an affiliate because I genuinely love this product. It’s transformed summer sleep for us, keeping my little one cool and settled through hot nights. Plus, it and makes bedtime transfers from the car to the cot an absolute breeze!
Get yours here.
*Please note, this is an affiliate link and I may earn a small commission at no extra cost to you. As a member of my loyal community, using this link will also mean you get a 10% discount. Hooray!