Here are the best twin-size mattresses, tested by CNET's sleep experts. Aly Lopez is a writer on the sleep team at CNET. She tests, researches and reviews everything sleep-related, from mattresses ...

From smallest to largest, they are: Twin size mattress Twin XL size mattress Full size mattress ... you'll have a much harder time finding sheets and bed foundations that fit.

These include small single mattresses (30 inches x 75 inches) -- notably shorter in length than twin or twin XL size ...

Learn more Looking for a twin-size mattress to furnish your dorm or kid's room? You have many great options to choose from, some of which are even on sale, making them even more attractive.

When you buy through our links, Business Insider may earn an affiliate commission. Learn more Looking for a twin-size mattress to furnish your dorm or kid's room? You have many great options to ...