Ultimately Hard Absolute Defence: Shield of Shukaku

This defensive technique is used by Gaara to create a toy-like replica of Shukaku wearing a wide-brimmed rural hat, that is roughly thrice the size of Gaara. Because the replica is formed under extreme pressure and is built of the strongest minerals which Gaara could derive from the earth, it is virtually indestructible, having yet to be penetrated by any force. As the name implies, this is Gaara's strongest defence.

Trivia

 * In the anime, the Shield of Shukaku has an attack variant called the Ultimately Hard Absolute Attack: Spear of Shukaku.