Night-time pull-up pants
It's suprisingly common for older children to wet the bed.
It can be a difficult time because, in order to provide enough absorbency for an older child, the pants need to be quite bulky. Also, in order for them to work as 'pull-up pants', they do not have poppers or velcro and so the sizing isn't adjustable; it can therefore be tricky getting a good fit. All this means that people either love them or hate them.
We recommend you try them on initially over a pair of pants, see if they give a snug fit, and possibly most importantly, gauge whether your child is prepared to wear them. This will give you a feel for whether they'll work for you.