A retention packaging system, comprising: a base panel (110; 210; 310) including first and second tension flaps (112, 114; 212, 214; 312, 314) foldably connected to a base portion (120; 220; 320), respectively, by first and second fold lines (122, 124; 222, 224; 322, 324) between the base portion (120, 220, 320) and the first and second tension flaps (112, 114; 212, 214; 312, 314); and a sheet (152; 252; 352), wherein the first and second tension flaps (112, 114; 212, 214; 312, 314) are configured to be rotated about the first and second fold lines (122, 124; 222, 224; 322, 324), respectively, from a first position to a second position below the base portion (120; 220; 320), wherein the object (180, 182; 280; 382) is biased toward the base portion (120; 220; 320) by the sheet (152; 252; 352) when the first and second tension flaps (112, 114; 212, 214; 312, 314) are in the second position, characterized by a sheet panel (140; 240; 340) including the sheet (152; 252; 352) connected to a first overwrap panel (142; 242; 342) and a second overwrap panel (144; 244; 344), wherein the sheet panel (140; 240; 340) further includes at least one detachable portion (146, 148, 150; 248, 250; 346) between the first and second overwrap panels (142, 144; 242, 244; 342, 344), wherein the first overwrap panel (142; 242; 342) includes a first attachment zone (174; 274; 374), and wherein the second overwrap panel (144; 244; 344) includes a second attachment zone (176; 276; 376); wherein, after the at least one detachable portion (146, 148, 150; 248, 250; 346) is detached from the sheet panel (140; 240; 340), the first overwrap panel (142; 242; 342) is configured to be selectively attached to the first tension flap (112; 212; 312) at one of a plurality of locations on the first tension flap (112; 212; 312) and the second overwrap panel (144; 244; 344) is configured to be selectively attached to the second tension flap (114; 214; 314) at one of a plurality of locations on the second tension flap (114; 214; 314) such that the sheet (152; 252; 352) spans between the first and second tension flaps (112, 114; 212, 214; 312, 314); and wherein the first and second tension flaps (112, 114; 212, 214; 312, 314) are configured to be in the first position when the first and second overwrap panels (142, 144; 242, 244; 342, 344) are attached to the first and second tension flaps (112, 114; 212, 214; 312, 314), respectively, to permit placement of an object (180, 182; 280; 382) between the sheet (152; 252; 352) and the base portion (120; 220; 320). a base panel (110; 210; 310) including first and second tension flaps (112, 114; 212, 214; 312, 314) foldably connected to a base portion (120; 220; 320), respectively, by first and second fold lines (122, 124; 222, 224; 322, 324) between the base portion (120, 220, 320) and the first and second tension flaps (112, 114; 212, 214; 312, 314); and a sheet (152; 252; 352), wherein the first and second tension flaps (112, 114; 212, 214; 312, 314) are configured to be rotated about the first and second fold lines (122, 124; 222, 224; 322, 324), respectively, from a first position to a second position below the base portion (120; 220; 320), wherein the object (180, 182; 280; 382) is biased toward the base portion (120; 220; 320) by the sheet (152; 252; 352) when the first and second tension flaps (112, 114; 212, 214; 312, 314) are in the second position, characterized by a sheet panel (140; 240; 340) including the sheet (152; 252; 352) connected to a first overwrap panel (142; 242; 342) and a second overwrap panel (144; 244; 344), wherein the sheet panel (140; 240; 340) further includes at least one detachable portion (146, 148, 150; 248, 250; 346) between the first and second overwrap panels (142, 144; 242, 244; 342, 344), wherein the first overwrap panel (142; 242; 342) includes a first attachment zone (174; 274; 374), and wherein the second overwrap panel (144; 244; 344) includes a second attachment zone (176; 276; 376); wherein, after the at least one detachable portion (146, 148, 150; 248, 250; 346) is detached from the sheet panel (140; 240; 340), the first overwrap panel (142; 242; 342) is configured to be selectively attached to the first tension flap (112; 212; 312) at one of a plurality of locations on the first tension flap (112; 212; 312) and the second overwrap panel (144; 244; 344) is configured to be selectively attached to the second tension flap (114; 214; 314) at one of a plurality of locations on the second tension flap (114; 214; 314) such that the sheet (152; 252; 352) spans between the first and second tension flaps (112, 114; 212, 214; 312, 314); and wherein the first and second tension flaps (112, 114; 212, 214; 312, 314) are configured to be in the first position when the first and second overwrap panels (142, 144; 242, 244; 342, 344) are attached to the first and second tension flaps (112, 114; 212, 214; 312, 314), respectively, to permit placement of an object (180, 182; 280; 382) between the sheet (152; 252; 352) and the base portion (120; 220; 320).