Molekularsieb 4A (4Mm) 50g

Marsoni

M251S

$13.81

Get it in 3 business days with 1 day shipping. Friday, May 29

Molekularsieb 4A (4Mm) 50gMolekularsieb 4A (4 mm) CHEM 467875005 Technische Information Name: Molekularsiebe 4A (4 mm Durchmesser) Synonyme: Molekularsiebe 4 , Natriumaluminosilikat Chemische Formel: nicht anwendbar (Aluminosilikatverbindung) Molare Masse: nicht anwendbar CAS Nummer: 70955 01 0 EC Nummer: 215 283 8 UN Nummer: nicht zutreffend ADR RID Klasse: nicht anwendbar Physikalische Form: Feststoff (Granulat, Durchmesser 4 mm) Farbe: gelblich braun Geruch: geruchlos pH

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I bought this to fit a full size 4" memory foam mattress topper. I gotta say it took 3 of us. 1 to lay on the memory foam and 2 of us to get it shoved in and keep pulling the bag up. But it actually fit! My arm was dying using the hand pump so we used a vacuum. It worked better than the hand pump. Due to what I was storing it did not shrink very flat, but compared to the size of the memory foam it shrunk a lot and will definitely save space! The bags arrived today so I dont know how well it holds up long term but the bag was very sturdy yanking it up around the foam. Didn't tear or stretch. And it actually fit!

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Reviewed in the United States on May 26, 2026

Verified Purchase

Lauren

Lexington, US

★★★★★ 5

Air comes out and STAYS out!

Set name: 10 Medium

I’ve tried so many different versions of these vacuum storage bags over the years, and this company seems to have finally figured it out. They’re absolutely not exaggerating about the 80% space savings. What really impressed me is the pump design — it actually screws onto the bag, so it stays securely attached while removing the air instead of constantly slipping off. It also has a stop valve built in, which prevents air from escaping when you remove the pump to put the cap back on. Such a smart design improvement over other brands I’ve used. I bought the medium 10-pack to store my winter clothes in two 66-quart storage bins, and they fit surprisingly well. That said, part of me wishes I had also picked up a few of the smaller sizes just because they’d probably make stacking and organizing even easier. Overall though, I’m really impressed with the quality and design.

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Reviewed in the United States on May 20, 2026