Despite only being released three months earlier, Kingsize was re-issued in the United Kingdom on 24 December 2001, containing an additional track, "The Heat", as well an enhanced section, featuring music videos and interview clips.

[7] Copies of the album bought at Woolworths stores in the United Kingdom came with an exclusive poster booklet, containing information and facts on the band, as well as a complete chart history and discography.

[8] The critic from PopMatters stated that, despite Five disbanding, their Kingsize showcases their ability to blend R&B, hip-hop, and pop influences better than their contemporaries like Backstreet Boys and *NSYNC.

[9] The review highlights tracks like "Let’s Dance," which features an upbeat, layered sound with voice modulation, and "Lay All Your Lovin’ on Me," praised for its use of ACDC’s guitar riff.

[10] She noted that the group attempts to incorporate snippets of various genres into pop-sized songs, but ultimately fails, producing a "hollow collection of derivatives.