Bassinets that list waterproof parts are generally designed to be portable: many include wheels, fold flat or compactly, or come with a travel/carry bag so you can move them between rooms or pack them for travel.
These models commonly add storage like side pockets, a nearby storage rack or a lower-level basket to keep diapers, wipes, and blankets within reach during changes.
Waterproof changing surfaces are typically described alongside easy-clean wording and convenience features such as ergonomic height settings, nearby storage pockets or racks, and flip-away or stowable changing stations for space-saving.