1. You owe additional tax and situations (2), (3), and (4), below, do not apply to you: Keep records for three years. 2. You do not report income that you should report, and it is more than 25% of the gross income shown on your return: Keep records for six years. 3. You file a fraudulent return: Keep records indefinitely. 4.
Twin Mattress. A twin mattress is the smallest possible mattress size, other than a crib-sized mattress. Twin mattress dimensions are approximately 38 inches wide by 75 inches long. Both twin and full sizes are approximately 75 inches long, which may be too short for some adults, especially men.
In the U.S., a double mattress is 54 inches wide and 75 inches long, according to the consumer website Mattress Sizes. According to the website of The Better Sleep Council, double mattresses are only big enough for one adult. Standard twin mattresses are 39 inches wide and 75 inches long, according to Mattress Sizes.