SlothIt keeps up with the room
Australian merino lining, organic cotton outer. No polyester batting. When the AC kicks in, it holds a little warmth. When it doesn’t, it lets heat go. That’s why we don’t print a TOG on it.
17–24°CNo TOGNo synthetic fill
A merino sleep sack for the first six months
Better nightsstart with 
merino
Merino warms when the nursery cools and breathes when it doesn’t. One classic sack — so they stay covered, and you can sleep too.
Australian merinoTwo-way zip
Sloth classicHK$780
For parents who were done with TOG charts
Why this sack
A drawer of TOGs, or one thing that keeps up
Most sleep sacks sell you a number. The room doesn’t care about the number. It cares about a fibre that can move with the night.
The 2am puzzle
- ✕ A different sack every season
- ✕ TOG numbers that never match your actual room
- ✕ Synthetic fill that holds heat when they don’t need it
- ✕ A zip that fights you with a sleepy baby in your arms
Every seasonanother sack in the drawer
TOGstill a guess at 3am
Core features
Everything a night actually needs
Built like a 4-season classic: merino next to skin, cotton outside, a zip you can work one-handed. Not a gadget. A sack.
Made for 2am
Two-way zip, zipper guards so it doesn’t catch skin, opens fully flat. Change a nappy without peeling the whole night off them.
It stays put
Snug at the chest and neck. Generous in the legs so they can kick. Don’t size up — a loose neck is how a sack rides up.
The sack
See it the way you’ll use it
On the crib rail. In the hanging bed. Opened at the lining.
Layer underneath
A bodysuit when it’s warm. Long sleeves when it isn’t. The sack is the constant.
Zip once
From the top or the bottom. Guards so it doesn’t catch skin.
Leave it on
Merino does the small adjustments you used to do with extra blankets.
| Size | Height | Weight | This drop |
|---|---|---|---|
| 0–6 months | 56–69 cm | 4.5–8 kg | Yes |
| 6–18 months | — | — | Later |
| 18–36 months | — | — | Later |
How it works
On in a minute. Quiet for the rest.
No extra sacks in the cupboard. Dress for the room, zip, and let the fibre work. Check the tummy or the neck — not the hands.
0–6mthis drop
30°Cmax wash
Dress for the room
A bodysuit on a warm night. Long sleeves when the AC is on. The sack doesn’t change — the layer underneath does.
Use cases
Who it’s for — and which night
First months
Out of the swaddle, into one classic sack they can keep through the 0–6 window.
0–6 months
The 2am change
Unzip from the bottom. Keep the rest of them warm. Zip. Back to bed.
Two-way zip
A room that swings
AC on, window cracked, 3am dip. Layer underneath; leave the sack on.
17–24°C
Crib or hanging bed
Same sack in the crib, the bassinet, a night at the grandparents’. No extra blankets.
Stays covered
Parents don’t need another number on a label. They need a sack that keeps up with a real nursery — the crib, the hanging bed, the 3am dip.Sloth · merino, said plainly
At a glance
The numbers that actually matter
One size this drop. One fibre. Rooms that don’t stay still.
0–6mthis drop only
17–24°Cthe range merino likes
75+parents asked for this sack
HKfirst batch ships here only
What parents say
From sample nights in Hong Kong homes
75+ parents asked for a sack like this. These four tried a sample week.
“The AC in our Tai Hang walk-up swings ten degrees after midnight. I used to get up and swap a sack. This one just… stayed. I checked his tummy once and went back to sleep.”
WLWai-lingTai Hang · baby, 4 months
“I was tired of TOG charts that never matched the actual room. We tried the sample on a humid week. Long sleeves underneath, sack on, two-way zip for the 2am nappy. That was the whole routine.”
MKMarcusSai Kung · baby, 3 months
“Out of the swaddle I was scared she’d slip. The neck sits snug — I didn’t size up, even though every auntie told me to. She kicked, the sack stayed a sack, and I stopped pulling blankets at 3.”
ANAnjaliMid-Levels · baby, 5 months
“Merino sounded like a ski jumper. It isn’t. Soft knit, oatmeal print, zip you can work with one hand in the dark. I emailed them the morning after the third night. That’s when I reserved.”
YKYukiKowloon Tong · baby, 2 months
This dropLater Popular Later
One sack. Charge when it ships.
Launch sell HK$780. Nothing captured today. Hong Kong SAR only.
6–18 months
—
Not this drop- Same classic cut
- Same merino lining
- Opens when this batch ships
0–6 months
HK$780
HK$899- Australian merino lining
- Organic cotton outer
- Two-way zip, opens flat
- Charge on ship · free cancel
- Hong Kong delivery only
18–36 months
—
Not this drop- Same classic cut
- Same merino lining
- Opens after 6–18
Frequently asked questions
Before you reserve
Ready when you are
Reserve the sack. Pay when it ships.
Nothing captured today. Cancel any time before ship week. First batch is Hong Kong only.