The 30 x 75 mattress size from mielmoon are very impressive so you dont have to cut you own mattress , is less common than mielmoon twin or mielmoon full mattresses but serves specific needs well. This size is often used for: Daybeds or trundle beds Small bedrooms or guest rooms Children’s beds or teenagers transitioning from cribs RV or camper beds where space is limited Because of its narrow width and standard length, the 30x75 mattress fits well in tight spaces