A warming system (200, 400, 700, 1100, 1900), comprising: a warming device, comprising: a clinical garment (112, 202, 402, 1108, 1706) comprising a body portion adapted to cover a portion of a patient, an inner surface for facing the patient, and an outer surface (218, 426, 1202) for facing away from the patient, wherein the body portion includes sleeves sized and positioned for receiving the patient's arms, wherein the body portion includes a torso portion adapted to cover an anterior torso of a patient; a first pneumatic convective device disposed adjacent to the inner surface; and an opening formed in the clinical garment for admitting a stream of pressurized, warmed air into the first pneumatic convective device; and a second pneumatic convective device (102, 502, 802, 1112, 1910) in a fully-folded configuration or partially-folded configuration and disposed on a portion of the clinical garment (112, 202, 402, 1108, 1706), characterized in that the warming device comprises a pocket (104, 300, 414, 704, 1904) dimensioned to receive the second pneumatic convective device (102, 502, 802, 1112, 1910), the pocket is formed on an inner side of the warming device, the first pneumatic convective device is fixedly attached to the clinical garment or portion thereof along a perimeter seal to form the pocket. a warming device, comprising: a clinical garment (112, 202, 402, 1108, 1706) comprising a body portion adapted to cover a portion of a patient, an inner surface for facing the patient, and an outer surface (218, 426, 1202) for facing away from the patient, wherein the body portion includes sleeves sized and positioned for receiving the patient's arms, wherein the body portion includes a torso portion adapted to cover an anterior torso of a patient; a first pneumatic convective device disposed adjacent to the inner surface; and an opening formed in the clinical garment for admitting a stream of pressurized, warmed air into the first pneumatic convective device; and a clinical garment (112, 202, 402, 1108, 1706) comprising a body portion adapted to cover a portion of a patient, an inner surface for facing the patient, and an outer surface (218, 426, 1202) for facing away from the patient, wherein the body portion includes sleeves sized and positioned for receiving the patient's arms, wherein the body portion includes a torso portion adapted to cover an anterior torso of a patient; a first pneumatic convective device disposed adjacent to the inner surface; and an opening formed in the clinical garment for admitting a stream of pressurized, warmed air into the first pneumatic convective device; and a second pneumatic convective device (102, 502, 802, 1112, 1910) in a fully-folded configuration or partially-folded configuration and disposed on a portion of the clinical garment (112, 202, 402, 1108, 1706), characterized in that the warming device comprises a pocket (104, 300, 414, 704, 1904) dimensioned to receive the second pneumatic convective device (102, 502, 802, 1112, 1910), the pocket is formed on an inner side of the warming device, the first pneumatic convective device is fixedly attached to the clinical garment or portion thereof along a perimeter seal to form the pocket.