Twin XL
$74999
7 Sizes
Twin Extra Long Size Adjustable Bases
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Twin XL
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Only At Mattress Firm
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Twin XL
$2,19900
$2,39900
5 Sizes
Best Seller
Limited Time Deal
Twin XL
$1,39900
$1,49900
6 Sizes
Best Seller
Limited Time Deal
Twin XL
$1,69900
$1,89900
6 Sizes
Only at Mattress Firm
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Twin XL
$1,19999
7 Sizes
Twin Extra Long Size Adjustable Bases
Twin Extra Long size adjustable bases are great for giving you more options with how you sleep and lounge on your twin XL mattress. This size of an adjustable base works well for tall individuals who need a little extra leg room. Shop our selection today at a Mattress Firm store or online.