Mongoose® - 9" Locking Slide Arm with 3/8" Stud

Marsoni

M251S

$259.20

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

Mongoose® - 9" Locking Slide Arm with 3/8" StudUS Patent Number 8,511,629 PLACEMENT Any upper tube, complete pole, low profile brackets, center pole or directly to any flat surface MOTION ATTACHMENT INCLUDED No ROTATES Entire arm 360 degrees can lock at every 15 degrees SPECS Height: 4. 0 in 10. 2 cm Width: 4. 0 in 10. 2 cm Depth: 12. 0 in 30. 5 cm FEATURES Design is protected by US Patent Number 8,511,629 The entire arm can rotate around 360 degrees with locking points at every 15 degrees To

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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