"The camps will give us the opportunity to prepare a foundation on which we can grow our game throughout the Steinlager Series," Hansen said.
"As it did last year, it will also give us a small window of opportunity to introduce some young players into the ways of the All Blacks and allow both these players and All Blacks management to get to know each other a little better."
Hansen said while the bulk of the squad would come from the 38 players going to the camps, it didn't mean those players not attending were out of the picture.
All Blacks training squad
Blues: Frank Halai *, Steven Luatua *, Keven Mealamu, Charles Piutau *, Rene Ranger, Francis Saili *, Piri Weepu and Ali Williams.
Chiefs: Ben Afeaki *, Sam Cane, Aaron Cruden, Tawera Kerr-Barlow, Liam Messam and Brodie Retallick.
Hurricanes: Beauden Barrett, Dane Coles, Ben Franks, TJ Perenara *, Julian Savea, Brad Shields *, Conrad Smith, Jeff Toomaga-Allen * and Victor Vito.
Crusaders: Dominic Bird *, Daniel Carter, Wyatt Crockett, Israel Dagg, Owen Franks, Kieran Read, Luke Romano, Tom Taylor * and Sam Whitelock.
Highlanders: Hosea Gear, Andrew Hore, Ma'a Nonu, Aaron Smith, Ben Smith and Tony Woodcock.
* denotes uncapped player.