"He has written a long complaint that he is being held in a section with particularly high security," said his lawyer, Tord Jordet. "He is the only one in this ward and the security regime is the strictest in Norway."
Breivik complained he was not getting enough butter to spread on his bread, was having to drink his coffee cold and was not able to keep a moisturiser in his cell, which, to his dismay, is sparsely decorated with no view.
He also said that the handcuffs he has to wear when being transferred are razor sharp and "cut into his wrists".
The 33-year-old confessed killer has said the attacks were justified because his victims were traitors for embracing multiculturalism.
In his letter to prison officials, Breivik protested that the censorship of his letters was so strict that his freedom of expression was being impinged upon, Jordet said.
Norwegian tabloid VG quoted Breivik as saying he was allowed to use only a soft and bendable safety pen described by its manufacturer as "stab-resistant" because it yields at the slightest pressure and cannot be used as a weapon.
Breivik was seen making avid notes with it during his 10-week trial at Oslo District Court that ended in August.
He has said he wants to write books in prison but that the special pen cramps his hand, describing it as "an almost indescribable manifestation of sadism," VG reported.
Prison officials would not comment on the letter as they were still considering the complaint.
Ellen Bjercke, a spokeswoman for Ila Prison where Breivik is being held, said that Breivik was given an electric typewriter on Friday but that it was not connected to his letter of complaint. It was not clear when Breivik's letter was delivered to prison officials.
Oslo District Court found Breivik guilty of terrorism and premeditated murder for the twin attacks on July 22, 2011, and gave him a 21-year prison sentence that can be extended if he's considered a threat.