The Magic Sleepsuit can be worn as long as your baby fits in it or is comfortable wearing it, and is back sleeping. You should enjoy the restful nights and naps until your baby is ready to transition out of the Magic Sleepsuit.
When babies start to roll over in the Magic Sleepsuit, this is typically a sign that they are ready for more movement in their sleep, so should be transitioned out of the Magic Sleepsuit. Also, the Magic Sleepsuit is specifically designed for back sleeping, so it is not recommended that babies use the Magic Sleepsuit in any other sleep position.
When it is time to transition babies out of the Magic Sleepsuit, the transition typically goes smoothly. The Magic DreamSack and the Magic DreamSack Walker are excellent options for the transition from Magic Sleepsuit by providing familiar fabrics babies have grown to love.