How the Merino Wool Sleep Sack Was Born
What Is a Merino Wool Sleep Sack?
Let’s start with the basics: what exactly is a merino wool sleep sack?
It’s a lightweight, all-in-one bedding solution — a combination of fitted sheet, blanket, and pillow pocket, sewn together to make sleeping (and bed-making) effortless.
No more wrestling with sheets, blankets, and corners. The merino wool sleep sack turns chaos into calm — designed to simplify life on the road and make every night feel like a small luxury.
The Need For The Sleep Sack Was Born From Frustration
To be honest, the merino wool sleep sack was born out of pure frustration.
If you’ve ever lived or traveled in a camper van, you know the pain: the endless “storage Tetris,” the constant unpacking and reassembling, and the never-ending effort of turning the dining area into a bed.
Our van’s extra bunk — that love-hate piece of furniture — finally broke us. It required daily assembly and disassembly, plus finding space for the pillows, blankets, and sheets every single morning.
And with two small kids thrown into the mix? Let’s just say, our patience had a very real expiration date.
That’s when the idea for the IVAN merino sleep sack started forming.
IVAN's merino wool sleep sack has the fitted sheet, blanket and pillowcase sewn into one, compact bundle. Like a lightweight sleeping bag, but with the same material as the other IVAN bed linens.
Life on the Road Inspired a Smarter Solution
After over ten years of vanlife, one truth was clear: life in a van isn’t life in a house. We needed a smarter, easier way to handle sleeping setups — something quick, cozy, and beautiful.
We had just developed the world’s first merino wool bedding fabric, and we realized it would be perfect for this idea. We took the shape of a traditional sleeping bag but made it better — more breathable, softer, and suited for van and boat life.
The result? A merino wool sleep sack that feels like sleeping inside a cloud — without the crinkly “plastic bag” feel of a traditional sleeping bag.
Why the Merino Wool Sleep Sack Is Brilliant
- All-in-one: fitted sheet, blanket, and pillow pocket
- Opens halfway and closes easily with natural buttons
- Bed ready in 5 seconds flat
- Rolls up compactly for storage
- Double-layered blanket section for extra warmth
- Soft merino wool always next to your skin
And the extras:
- Naturally temperature-regulating — warm when it’s cool, cool when it’s hot
- Air out to refresh — longer wash intervals
- Machine-washable at 30°C
- Blanket stays in place all night (especially handy with kids!)
- Doesn’t itch, even for sensitive skin
The sleep sack works like a dream in campervans, RVs, campers and boats. Instantly dry & warm against the skin. Roll it up and it fits into the cupboard, or use it as an extra pillow.
For Adults and Kids — Comfort and Ease in Every Situation
Our sleep sacks solved the bedtime chaos — and earned a permanent spot in our vanlife essentials. Whether summer or winter, merino wool performs beautifully all year round. When not in use, the sleep sack rolls up neatly or doubles as a soft throw pillow on the couch.
Washing is easy: no more juggling pillowcases, sheets, and duvet covers — just toss the whole sack into the washer and hang to dry.
The Versatile Sleep Sack: For Toddlers, Kids & Adults
The best part? Its versatility. A sleep sack for toddlers, a kids’ sleep sack, an adult sleep sack, or even a cozy lounging cocoon — it fits every lifestyle and adventure.
Merino wool keeps the body dry and warm, even in humid or chilly spaces like camper vans and boats. It breathes, wicks moisture, and maintains a balanced temperature — perfect for a peaceful night’s sleep.
We’ve used our merino wool adult sleep sack everywhere: on the road, on the water, at the cabin, for a men's getaway weekend, and even for lazy sick days on the couch.
The children's sleep sack has an additional bonus: the blanket stays on throughout the night, keeping the little ones warm and letting mom & dad sleep more peacefully, too.
Merino wool sleep sacks come in two sizes: one for adults and the other for kids. The smaller one has ears for extra fun!
Handmade in Finland – Designed for Life on the Move
Each merino wool sleep sack is proudly made in Finland — the fabric knitted in Orivesi and sewn in Tampere. Available in two sizes: adult sleep sack and sleep sack for kids/toddlers.
Soft. Sustainable. Sanity-saving. That’s what IVAN sleep sacks are all about.
Discover the Merino Wool Sleep Sacks and sleep peacefully & luxuriously, no matter where adventure takes you.
Best dreams,
team IVAN