Zinus 9" Twin Metal Smart Box Spring Mattress Foundation

• Woot now offers the Zinus 9-inch Twin Metal Smart Spring Mattress Base for $27.99 (list price $95.0).
• Prime members get free two-day shipping; standard members get free shipping on orders over $35 within the US.
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Editor's Pick: When you replace your mattress, swap out the base too. The metal frame is easier to assemble than wood—just tighten the screws and it's sturdy. The 9-inch height fits most mattresses, and a twin size is perfect for a guest room or kids' room. There's space underneath, so you can slide in a few storage bins and it's easy to clean.