The 6' Ocean Play Snapset Pool arrived on a sunny day and my children demanded it be filled immediately. With no need to inflate the sides it seemed perfect, but making sure the sides stood up was difficult; the result was water escaping until the water pressure was high enough to hold them up. Once it was quarter full the pool was fairly rigid, but children entering and leaving collapse the walls resulting in more water loss. Don't get me wrong, the children love the pool, but it does need frequent refilling.