"2-tier extending shoe rack"
I have had my racks and find them wonderful for my front porch, they have retained their shiny new feel for years. You can get round the 'shoe slipping off' problem by turning the racks 180degrees so the slope is facing towards a wall - if the shoes do slip the toes then bump the wall but stay in position. Once I'd worked this out I then thought 'maybe this is how they are supposed to be placed'?