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Twin-Size Extra Firm Mattresses
The twin mattress size (38" x 75"), first standardized in the 1950s, is so named because these beds were often sold in pairs. If you're looking for just one twin mattress, or a pair, Sleep Train is the spot for you, with affordable extra firm twin mattress options that are perfect for your child's bedroom or your guest room. Check out the selection of twin extra firm mattress options available now, and shop today to save.