Thawing biological substances

An overwrap bag to contain a biological substance container and to be placed in a thawing system comprising a housing configured to receive the biological substance container contained in the overwrap bag, the overwrap bag comprising:

• a flexible or semi-rigid cavity including a pre-formed funnel-shaped portion configured to receive and align the biological substance container, wherein the biological substance container is configured to contain from about 3 mL to about 10 mL of a biological substance, wherein the pre-formed funnel-shaped cavity comprises a top portion with a first width and a substantially straight stem portion having a bottom portion opposite the top portion with a second width smaller than the first width and larger than the width of the biological substance container, such that the biological substance container passing the top portion is funneled toward the bottom portion and aligned by the substantially straight stem portion with respect to the second width;
• a temperature sensor coupled to a portion of the flexible or semi-rigid cavity and positioned in between the top portion and the bottom portion and within the second width, with respect to the pre-formed funnel-shaped portion, and configured to measure a temperature of the biological substance container containing the biological substance, wherein the substantially straight stem portion is configured to align the biological substance with respect to the temperature sensor;
• and
• an identifier for the biological substance,
• wherein the pre-formed funnel-shaped cavity is shaped to funnel the biological substance container toward the bottom portion, with the substantially straight stem portion aligning the biological substance container to contact the portion of the cavity where the temperature sensor is coupled.