If you are buying or renting the SNOO, and you’re wondering exactly what Happiest Baby accessories you need on day one, this post is for you.
I used the SNOO with my first baby, used it again with my second, still love it, and fully plan to use it again for baby number three. So at this point, I have a pretty clear opinion on what Happiest Baby products you actually need for the SNOO and what you can probably skip.
Because here is the thing: the SNOO itself is the big purchase. Once you have it, you do not necessarily need every single accessory Happiest Baby sells.
But you absolutely do need enough of the right accessories.
The difference between having one SNOO sack and having enough SNOO sacks is the difference between calmly changing the baby after a 2 a.m. spit-up situation and realizing the only clean sleep sack is still damp in the dryer.
Ask me how I know.
This is the realistic SNOO accessory list I would give a friend, especially a first-time mom building a baby registry or a mom planning to reuse the SNOO for another baby.
Related: Read my full SNOO review here.
Affiliate disclosure: This post may contain affiliate links. As an Amazon Associate and/or affiliate partner, I may earn from qualifying purchases at no extra cost to you.
Quick Answer: What Happiest Baby Products Do You Actually Need for the SNOO?
If you want the simple version, these are the SNOO accessories I would prioritize:
- At least two SNOO Sleep Sacks in each size
- Three to four SNOO fitted sheets
- SNOO Leg Lifters as an optional “have on hand” item
- The Big Bundle only if it saves you money, but you may still need extras
That is really it.
You do not need to overbuy. You do not need every add-on. But you do want enough backups that your entire night does not fall apart because one sheet is wet or one sleep sack did not dry in time.
Pro Mama Tip: Double check what your SNOO already comes with at time of purchase or rental. Based on the Amazon listing in April 2026, buying the SNOO comes with 1 ivory sheet and 1 of each size (S, M, and L) ivory sleep sack.. Rental benefits may be different.
Why the Right SNOO Accessories Matter
The SNOO is different from a regular bassinet because the baby sleeps clipped into the SNOO using the compatible SNOO Sleep Sack. Happiest Baby describes SNOO as a responsive bassinet that uses motion and white noise to soothe babies, and its sleep sack system is part of how the baby is secured in the bassinet.
That means SNOO accessories are not just “cute extras.” Some of them are functional necessities.
When your baby spits up, has a diaper leak, or somehow gets one tiny wet spot exactly where their cheek wants to rest, you need to be able to change the sleep space quickly.
And if you have never met a baby who hates a wet spot, let me tell you: babies hate the wet spot.
A clean, dry SNOO sheet and a backup sleep sack can save the night.
1. SNOO Sleep Sacks: How Many Do You Actually Need?
My honest recommendation is to have at least two SNOO Sleep Sacks in each size.
Happiest Baby currently sells the 100% Organic SNOO Sleep Sack and also offers bundles that include sacks in small, medium, and large.
The reason I recommend two of each size is simple: laundry.
Sometimes the SNOO sacks do not dry as quickly as you expect. Sometimes the baby spits up right after you just changed them. Sometimes there is a diaper leak in the middle of the night. And when you need a SNOO sack, you really need one.
You cannot just throw the baby into the SNOO without the correct sleep sack setup.
So for each size, I would aim for:
- 2 small SNOO Sleep Sacks
- 2 medium SNOO Sleep Sacks
- 2 large SNOO Sleep Sacks
Could you get by with one in each size? Technically, maybe.
Would I personally want to do that with a newborn? No. Babys spit up a lot more than expected and on their own timeline! And diaper blow outs just happen. So, a wet or dirty sleep sack at 2 am could definitely happen.
The newborn stage already has enough little stress points. Having a clean, dry backup sleep sack is one of those simple things that makes the whole system feel easier.
My SNOO Must-Haves
After using the SNOO for two babies, these are the accessories I would actually buy again:
1. SNOO Sleep Sacks
I recommend having at least two in each size so you are never stuck without a clean, dry sleep sack.
2. SNOO Fitted Sheets
Three to four sheets is the sweet spot for spit-up, diaper leaks, and easy middle-of-the-night changes.
3. SNOO Leg Lifters
Optional, but helpful to have on hand if your pediatrician ever recommends elevation.
Shop my SNOO must-haves here:
My SNOO Sleep Sack Strategy
If you are buying everything yourself, I would start with one of each size and then add a second in whatever size your baby is currently using.
If you are building a registry, I would register for two of each size from the beginning.
If you are planning to use the SNOO for more than one baby, I think having extras makes even more sense. I used the SNOO for my second baby and still love it enough that I plan to use it for baby number three, so these are not one-and-done items for me.
2. SNOO Sheets: How Many Do You Actually Need?
I recommend three to four SNOO fitted sheets.
Happiest Baby sells SNOO Baby Bassinet Sheets made for the SNOO mattress, including organic cotton options and multi-packs.
This is one of the easiest places to underestimate what you need.
One sheet on the mattress and one backup sounds reasonable until the baby spits up on the first sheet, the second one is in the wash, and now you are trying to figure out what to do at 3 a.m.
With three to four sheets, you can keep one on the SNOO, one or two clean in the drawer, and one in the wash.
That is the sweet spot.
Why SNOO Sheets Are Worth Having Extras Of
Babies spit up. Babies drool. Diapers leak. Milk gets everywhere. And even a small wet spot can make a baby uncomfortable enough to fully wake up.
This is especially frustrating because the wet spot can look tiny to you, but to your baby it is apparently a personal insult.
Having extra SNOO sheets means you can do a fast middle-of-the-night change without digging through laundry or waiting for the dryer.
My recommendation:
- Minimum: 2 sheets
- Better: 3 sheets
- Best: 4 sheets
If you are buying for your first baby and plan to use the SNOO for future babies, I would go straight to three or four.
3. The Big Bundle: Is It Worth It?
Happiest Baby’s Big Bundle currently includes SNOO sacks in small, medium, and large plus two fitted sheets.
This can be a great starting point, especially if it is on sale or if you are adding it to your registry.
But here is my honest take: The Big Bundle is useful, but it may not be enough.
It gives you one sleep sack in each size and two sheets. That is a solid start, but based on real-life newborn laundry, I still prefer having two sleep sacks in each size and three to four sheets total.
So if you buy the Big Bundle, I would consider adding:
- One extra SNOO Sleep Sack in each size
- One or two extra SNOO fitted sheets
That gives you a much more practical setup.
4. SNOO Leg Lifters: Do You Need Them?
SNOO Leg Lifters are not something I used regularly, but I did buy them to have on hand.
Happiest Baby describes SNOO Leg Lifters as a way to raise the head of the bassinet slightly when a doctor recommends elevation.
I personally got them in case of illness, congestion, or a situation where my pediatrician recommended using them. Thankfully, I never had to use them.
That said, I still think they can be a good thing to have before you need them.
Because when your baby is sick, congested, spitting up more than usual, or you are already exhausted and worried, the last thing you want to do is scramble to order something and wait for it to arrive.
Important note: I would only use the SNOO Leg Lifters with approval from a pediatrician. This is not medical advice, and I would not make sleep-positioning changes without checking with your baby’s doctor.
For me, the leg lifters fall into the category of “nice to have on hand, but not an everyday essential.”
What I Would Skip or Delay
Not every Happiest Baby product needs to be purchased right away.
Here is what I would personally skip or wait on unless you know you want it:
The Sleepea
The Happiest Baby item I would personally skip is the Sleepea Swaddle.
This is not because it is a bad product. If your baby is really comfortable in the SNOO Sleep Sack and you want something familiar for naps, travel, or sleep away from the SNOO, then grabbing one Sleepea could make sense.
But for me, it would not be a must-buy.
The SNOO Sleep Sacks are necessary because they work with the SNOO clips. The Sleepea is more of a regular swaddle option for when your baby is sleeping outside of the SNOO. And once you are in that category, there are a lot of great swaddles and sleep sacks to choose from.
Personally, for swaddling outside of the SNOO, I prefer other options like the HALO SleepSack Swaddle. It is easy to use, widely available, and works well for a regular bassinet, crib, travel setup, or nap situation.
So my take is:
- Using the SNOO? Prioritize actual SNOO Sleep Sacks.
- Need a swaddle for outside the SNOO? Sleepea is fine, but not essential.
- Building a practical baby registry? I would register for SNOO sacks, SNOO sheets, and a few non-SNOO swaddles you can use anywhere.
If your baby absolutely loves the SNOO Sleep Sack feel and you want a similar Happiest Baby option for naps away from the SNOO, then the Sleepea may be worth trying. But if you are trying to keep your baby registry streamlined, this is one item I would personally skip.
The SNOO Comforter Sleep Sack
The SNOO Comforter sleep sack is a thicker, warmer sleep sack option with a TOG rating of 2.0. It’s a good option for babies in colder climates or born in cooler seasons. If you decide a warmer sleep sack is for you, I recommend grabbing one quickly from Happiest Baby, because these tend to sell out a lot.
Extra decorative accessories
Cute? Yes. Essential? Not really.
For the newborn phase, I care most about clean sleep sacks, clean sheets, and safe, simple sleep routines.
Extra soothing products before you know your baby
Some babies love additional sound machines, loveys, or comfort items later on. But when you are specifically buying for the SNOO stage, I would not overbuy before you know what your baby responds to.
Too many SNOO sleep sacks in one size before baby arrives
I do recommend two in each size, but I would not buy five or six in one size unless you know your baby will be in that size for a while. Babies grow quickly, and the SNOO stage is relatively short.
My Ideal SNOO Setup
If I were preparing for another baby right now, this is exactly what I would want ready before baby came home:
SNOO Sleep Sacks
- 2 small
- 2 medium
- 2 large
SNOO Sheets
- 3 to 4 fitted sheets
Optional
- SNOO Leg Lifters, stored away in case my pediatrician ever recommended them
That is the list.
It is not complicated, but it is practical.
Best SNOO Accessories for Your Baby Registry
If you are making a baby registry, I would absolutely add the SNOO accessories.
People love buying cute baby gifts, but the most helpful gifts are often the ones that save you at 2 a.m.
Add:
- SNOO Sleep Sacks in each size
- Extra SNOO fitted sheets
- The Big Bundle
- SNOO Leg Lifters as an optional add-on
You can also write a little note on your registry like:
“We are planning to use the SNOO, so extra SNOO sheets and sleep sacks will be so helpful for middle-of-the-night changes and laundry backup.”
That helps people understand why these specific items matter.
Are Happiest Baby SNOO Accessories Worth It?
In my opinion, yes — but only the practical ones.
The SNOO itself was one of my favorite baby products. I used it for my first, used it again for my second, and I still plan to use it for baby number three.
But the accessories that matter most are the ones that keep the SNOO usable every night:
- A clean sleep sack
- A dry fitted sheet
- A backup ready to go
That is what actually makes life easier.
Final Thoughts: What to Buy for SNOO
If you are wondering what Happiest Baby products you actually need for the SNOO, my advice is to keep it simple.
You do not need every single accessory and make sure to check what your SNOO purchase or rental already comes with!
You do need enough sleep sacks and sheets to survive newborn laundry, spit-up, and middle-of-the-night changes without stress.
My must-have list is:
- Two SNOO Sleep Sacks in each size
- Three to four SNOO fitted sheets
- SNOO Leg Lifters only as an optional, pediatrician-approved item to have on hand
That setup gives you what you need without overbuying.
And if you are already investing in the SNOO, the accessories that keep it clean, dry, and ready to use are absolutely worth planning for.
Related posts you may love:
- [My Honest SNOO Review After Using It for Two Babies]
- [Is the Cradlewise Smart Crib Worth It?]
- [Baby Brezza Bottle Washer Review]
- [Ceres Chill Review]
- [How I Built a 700 oz Breastmilk Freezer Stash]
FAQ: Happiest Baby Products You Need for the SNOO
How many SNOO Sleep Sacks do you need?
I recommend at least two SNOO Sleep Sacks in each size: small, medium, and large. This gives you a backup when one is dirty, wet, or still drying.
How many SNOO sheets do you need?
I recommend three to four SNOO fitted sheets. This makes it easy to change the sheet after spit-up, drool, or diaper leaks without waiting on laundry.
Is the Happiest Baby Big Bundle enough?
The Big Bundle is a great starting point, but I would still add extra sleep sacks and at least one or two more sheets. One sleep sack per size and two sheets may not be enough for real newborn laundry.
Do you need SNOO Leg Lifters?
You do not necessarily need SNOO Leg Lifters for everyday use. I bought them to have on hand in case my pediatrician ever recommended elevation during illness or congestion, but I personally never had to use them. I would never add anything to my baby’s safe sleep set up unless discussed with my pediatrician first.
Can you use regular bassinet sheets on the SNOO?
I would use sheets designed to fit the SNOO mattress properly. A snug, correctly fitting sheet is important for safe baby sleep.
Are SNOO accessories good baby registry items?
Yes. SNOO Sleep Sacks and SNOO sheets are great registry items because they are practical, useful, and easy for friends and family to buy.
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