How big to go is the first thing you need to know. Mattresses come in many sizes:
- A twin mattress is 75 inches long by 39 inches wide and great for children and teens.
- An XL twin mattress is 80 inches by 39 inches, which offers a longer length for taller youth.
- A full size mattress is 75 inches by 54 inches and works for young adults and smaller guest rooms.
- A queen mattress is 80 inches by 60 inches and is perfect for couples or single sleepers wanting a little extra room.
- a king-size mattress is 80 inches by 76 inches, which gives couples room to sleep comfortably.
- A California-king-size mattress is a bit wider at 84 inches by 72 inches, there's plenty of room for couples (and pets!).