It wasn't an issue before. When baby was younger and the crib mattress was at the highest setting, changing sheets was easy. But as he's grown and the mattress has been lowered, it's becoming more and more of a chore.
The Quick Change Crib features a panel door on one end of the crib.
Open the door, slide out the mattress to change the sheets if baby has an accident. You can slide out the mattress without disrupting bumpers or cribskirts.