|Outer material||100% polyester|
|Category||Umbrellas & Walking Sticks|
|Theme||Fan merch, Film|
'Harry Potter' - I Solemnly Swear
- Length when closed: approx. 24 cm
- Length when opened: approx. 55 cm
- Diameter when opened: approx. 105 cm
In order to make the Marauder's Map visible and possible to use – or to make it invisible and hide it away again – you need to know certain activation and deactivation phrases. On the outside of this umbrella are the words "I solemnly swear that I am up to no good" – the key to activating the map.