Most people don’t think about what’s inside a bean bag until it starts feeling like a deflated balloon. That’s when the search for the right filler begins. The two most common options are polystyrene beads and shredded memory foam. Big Joe sells the classic beads, while Welacer offers a modern foam alternative. This bean bag filler comparison breaks down which one actually makes sense for your money and your back.
| Our Pick | Runner Up |
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| Big Joe Big Joe Bean Refill Polystyrene Beans for… | Welacer Welacer 15lbs Bean Bag Filler, Blue Memory… |
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This decision matters if you own a bean bag chair, a pouf, or even a punching bag that needs refilling. It also matters if you’re starting a DIY project from scratch. The choice comes down to how you sit, how long you want the fill to last, and how much you’re willing to spend per cubic foot of material. We’ll get into that math shortly.
Here’s the short version: beads are cheaper and easier to pour, but foam holds its shape better and feels more like a real cushion. Neither is perfect, and the right pick depends on your specific setup.
The 3 Main Filler Types: Beads, Foam, and Fiber
Before diving into the two products, it helps to understand the broader landscape. Polystyrene beads are the traditional choice. They’re tiny, lightweight balls that flow around each other. They provide that classic bean bag sink-and-shift feel. Shredded memory foam is the newer option. It’s cut into small chunks that interlock and provide more resistance. Poly-fil, or polyester fiber, is the third option, but it’s less common for large bean bags because it compresses too easily.
This article sticks to the first two. Big Joe’s product is the standard bead approach. Welacer’s product is the foam approach. Both are sold as refill material, but they behave very differently.
Head-to-Head Comparison: Durability, Comfort, and Cost
Let’s look at the core differences in a simple table. These are the specs that actually matter when you’re sitting on the thing.
| Feature | Big Joe Polystyrene Beans | Welacer Memory Foam |
|---|---|---|
| Material | Polystyrene beads (EPS) | Shredded memory foam |
| Sold By | Volume (100 Liters) | Weight (15 lbs) |
| Feel | Flowing, loose, classic bean bag | Dense, supportive, cushion-like |
| Sound | Crunchy, rustling | Silent |
| Expansion | None, ready to use | Vacuum-sealed, needs 24-48 hours to expand |
| Certifications | Recyclable | OEKO-TEX certified materials |
| Refill Difficulty | Easy, pours like sand | Messy, needs to be pulled apart |
The “Crunch” Factor vs. The “Hug” Factor
Big Joe’s beads make noise. Every time you shift your weight, you hear that familiar crunch. Some people find it relaxing. Others find it annoying, especially if the bean bag is in a bedroom or a quiet living room. The beads also slide against each other, which means the bag doesn’t hold a shape. It molds to your body but offers zero support.
Welacer’s foam is silent. It doesn’t crunch or rustle. It feels more like a dense pillow. The shredded memory foam chunks catch on each other, creating a “hug” effect. You sink in, but you don’t hit the floor. The bag holds its shape better when you stand up. For anyone who uses a bean bag for reading or watching TV, the foam is a significant upgrade in comfort.
Density and Expansion Ratio Explained
This is where most people get confused. Big Joe sells 100 liters of beads. That’s a volume measurement. The bag is full of air between the beads, but it’s ready to use immediately. Welacer sells 15 pounds of foam. That’s a weight measurement. The foam arrives vacuum-sealed and compressed into a brick. You have to open it, fluff it, and wait up to 48 hours for it to fully expand.
The expansion ratio matters. A 15-pound block of compressed foam can expand to a surprisingly large volume—often more than 100 liters. But it’s not guaranteed. The density of the foam determines how much volume you get per pound. Denser foam weighs more but provides more support. Lighter foam expands more but feels fluffier. Welacer’s foam sits somewhere in the middle, leaning towards supportive.
The practical takeaway: don’t compare the numbers on the label. Compare the volume of material you get after the product is ready to use.
The Hidden Cost: Calculating Filler by Volume, Not Weight
Here is the math that most reviews skip. You need to know the cost per cubic foot to make a fair bean bag filler comparison. A standard 5-foot bean bag chair needs roughly 300 to 400 liters of filling to look full. That’s a lot.
Big Joe’s 100-liter bag is the base unit. You will need at least three bags for a large chair, possibly four. That’s 300 to 400 liters of beads. The cost is straightforward: multiply the price of one bag by three or four.
Welacer’s 15-pound bag is trickier. After expansion, 15 pounds of shredded memory foam might yield around 100 to 150 liters of fluffy fill. But here’s the catch: foam compresses under weight. A bag filled with foam will look full initially, but after a week of sitting, it will compress by 20-30%. You will likely need to add more. For a large chair, you might need two or three bags of foam to get the same fill level as four bags of beads.
So which is cheaper? Beads are almost always cheaper per cubic foot. Polystyrene is a cheap material. Memory foam is more expensive to produce. However, foam lasts longer. Beads compress and lose their springiness over time. They also break down into smaller pieces, creating dust. Foam maintains its structure for years if you fluff it regularly.
Think about it in terms of total cost of ownership. Beads are cheap now, but you might replace them in two years. Foam costs more upfront, but it could last five years or more. For a chair you use daily, the foam often wins on value.
Allergies, Dust, and Off-Gassing: What the Labels Don’t Say
This is a real concern that nobody talks about. Polystyrene beads are notorious for generating static electricity. That static attracts dust and pet hair. Over time, the beads break down from friction. They turn into fine dust particles that can escape the inner liner and irritate your lungs. If you have allergies, this is a serious consideration.
Memory foam has a different profile. It doesn’t create static. It doesn’t break down into dust in the same way. However, some memory foam products have a distinct chemical smell when they arrive. This is called off-gassing. Welacer’s product is OEKO-TEX certified, which means it has been tested for harmful substances. That certification reduces the risk of harsh chemical smells. It’s not a guarantee of zero odor, but it’s a good sign.
For allergy sufferers, foam is generally the safer bet. The lack of dust and static makes it a cleaner option for indoor air quality. Beads are fine if you don’t have sensitivities, but the dust issue is real over time.
Environmental Impact: Recycled vs. Virgin Materials
Big Joe markets their beads as 100% recyclable. That’s true, but it’s not the whole story. Polystyrene is a petroleum-based plastic. It takes a long time to break down in a landfill. Recycling it requires special facilities that many cities don’t have. So while it’s technically recyclable, the practical reality is that most of it ends up in the trash.
Memory foam is also a synthetic material. It’s not biodegradable. However, shredded memory foam can sometimes be repurposed for other projects. You can use it for pet beds, pillow stuffing, or craft projects. It’s easier to handle at the end of its life than a giant bag of loose beads.
Neither option is truly “green.” If that’s your priority, look for recycled polystyrene beads. Some brands offer them, though Big Joe’s standard product does not specify recycled content. Foam has a slight edge in versatility for reuse, but it’s not a clear winner.
The Hybrid Hack: Mixing Foam and Beads for the Perfect Sit
You don’t have to choose one or the other. A lot of people mix them. The strategy is simple: use beads as a base layer for support, then top it off with foam for comfort.
Here’s why this works. Beads provide a solid foundation that doesn’t compress completely. They keep the bag from flattening out. Foam provides the soft, cushioned surface that you actually sit on. The combination gives you the moldability of beads with the comfort of foam.
To do this, you’ll need both products. Start by pouring two bags of Big Joe beads into the empty liner. Then add one bag of Welacer foam on top. Fluff the foam before adding it. Mix it gently with your hands. You’ll get a chair that holds its shape better than pure beads and feels softer than pure foam.
This is the best of both worlds, but it’s also the most expensive option. You’re buying two products instead of one. Only go this route if you’re sure the standard options aren’t working for you.
Top 5 Recommended Fillers (Quick Reviews)
While this article focuses on Big Joe and Welacer, it’s worth knowing what else is out there. Here are the common types you’ll find.
- Polystyrene Beads (Big Joe style): The classic. Cheap, easy to pour, and effective. Best for kids’ rooms and casual use.
- Shredded Memory Foam (Welacer style): Comfortable, silent, and durable. Best for adults who want a supportive seat.
- Recycled Polystyrene: Same as regular beads but with a lower environmental impact. Harder to find but worth seeking out.
- Poly-Fil Fiber: The cheapest option. Fluffy but compresses quickly. Not great for large bean bags.
- Cooling Gel Beads: A niche product. They feel cool to the touch but are heavy and expensive. Rarely used for whole chairs.
For most people, the decision comes down to the first two. That’s why this comparison matters.
If you are starting from scratch, you might want to read our guide on how to fill a bean bag chair before you order anything. It will give you a better sense of how much material you actually need.
How to Refill and Fluff Without Making a Mess
Refilling a bean bag is a messy job. Beads are light and static-prone. They stick to everything. Foam is bulky and hard to handle. Here’s how to do it cleanly.
For Big Joe beads, cut the bag along the dotted line as instructed. Don’t rip it open. Use a large funnel or a plastic bottle with the bottom cut off. Insert the funnel into the bean bag liner and pour slowly. Do this in a bathtub or a large plastic bin. The beads will bounce, but the bin will catch them. Wear a dust mask if you have allergies.
For Welacer foam, the process is different. Open the vacuum-sealed bag and pull the foam apart with your hands. It will be compressed into dense chunks. Loosen every piece before adding it to the liner. If you don’t, you’ll have hard lumps in your chair. After you add the foam, fluff it again from the outside. Squeeze and knead the bag to distribute the fill evenly.
Allow 24-48 hours for the foam to fully expand before judging the fill level. It will look under-filled at first. It will rise as the foam relaxes.
For more tips on maintaining your chair, check our guide on how to clean a bean bag. Keeping the cover clean extends the life of the filler.
FAQ: How Much Do I Need? Why Does My Bag Go Flat?
How much filler do I need for a standard bean bag chair?
For a standard 5-foot bean bag, plan on 300 to 400 liters of beads or 30 to 45 pounds of foam. That translates to 3-4 bags of Big Joe’s 100-liter product, or 2-3 bags of Welacer’s 15-pound product. It’s always better to buy one extra bag than to run out mid-refill.
Why does my bean bag go flat so quickly?
Beads compress because the air between them escapes as you sit. The beads themselves also break down over time. Foam compresses because the material itself is being squeezed. The fix is the same for both: add more filler. For foam, you can also fluff it by kneading the bag. This redistributes the material and restores some loft.
Can I wash the filler?
No. Neither beads nor foam is washable. If the filler gets wet or dirty, you have to replace it. This is why a removable, washable cover is so important. Protect the inner liner, and the filler stays clean.
Which filler is better for a child’s bean bag?
Beads are the safer choice for kids. They are lighter, which makes the bag easier to move. They also pose less of a suffocation risk if the bag tears open, as they are easier to vacuum up. Foam chunks can be a choking hazard if the liner is damaged.
If you are building a bag from scratch, you might want to look at our bean bag comparison guide to see which type of chair suits your room best.
Final Verdict: Which Filler Wins?
Let’s be honest about the trade-offs. Big Joe’s polystyrene beads are the budget-friendly workhorse. They are easy to pour, cheap to buy, and give you that classic bean bag feel. But they are noisy, dusty, and compress over time. You will likely need to top them up every year or two.
Welacer’s shredded memory foam is the comfort pick. It’s silent, supportive, and OEKO-TEX certified, which is a nice assurance for a product you sit on daily. The downsides are the higher price, the messier installation, and the 48-hour expansion wait. It also requires more effort to fluff and maintain.
So which one wins? For most adults, the Welacer foam is the better long-term investment. The comfort difference is substantial. The lack of dust is a health bonus. The durability means you won’t be re-buying filler every year. It costs more upfront, but it’s a “buy once, buy right” situation.
However, if you are outfitting a kids’ playroom or a dorm room on a tight budget, the Big Joe beads are the smarter choice. They are cheaper per cubic foot, and a child won’t notice the difference between crunch and silence. They just want something to jump on.
My advice: if your bean bag is a permanent piece of furniture, go with the foam. If it’s a temporary seating option, save your money and get the beads. You can always mix them later if you change your mind.
