Thermal pack that conforms to curved surfaces

A thermal pack comprising:

• a first flexible sheet and a second flexible sheet joined together forming a sack, the sack comprising a sack perimeter, a sack outer surface, a sack inner plenum bound by the first flexible sheet and the second flexible sheet along the sack perimeter, and a flowable thermal material enclosed in the sack inner plenum;
• a plurality of joint lines joining portions of the first flexible sheet and the second flexible sheet within the sack inner plenum forming a plurality of hexagonal shaped thermal material cells, each thermal material cell of the plurality of hexagonal shaped thermal material cells sharing a joint line as a hexagonal thermal material cell perimeter boundary line with an adjacent thermal material cell thereby forming a tessellated pattern;
• the hexagonal shaped thermal material cells having six faces wherein a first face joins a second face forming a first obtuse angle section, the second face joins a third face forming a second obtuse angled section, the third face joins a fourth face forming a third obtuse angled section, the fourth face joins a fifth face forming a fourth obtuse angled section, the fifth face joins the a sixth face forming a fifth obtuse angled section, the sixth face joins the first face forming a sixth obtuse angled section;
• the hexagonal shaped thermal material cells further having a first gap disposed in the first face, a second gap is disposed in the second face, a third gap is disposed in the fourth face, and a fourth gap is disposed in the fifth face;
• the hexagonal shaped thermal material cells having an upper thermal material retaining portion comprising the first obtuse angled section, the second face, and the second obtuse angled section configured to deflect thermal material flow towards a hexagonal shaped thermal material cell center;
• the hexagonal shaped thermal material cells further having a first lateral thermal material retaining portion comprising the sixth obtuse angled section and a second lateral thermal material retaining portion comprising the third obtuse angled section, the first and second lateral thermal material retaining portions configured to deflect thermal material flow towards the hexagonal shaped thermal material cell center;
• and
• the hexagonal shaped thermal material cells having an lower thermal material retaining portion comprising the fourth obtuse angled section, the fifth face, and the fifth obtuse angled section configured to retain thermal material flowing into the hexagonal shaped thermal material cell and deflect excess thermal material flow towards the hexagonal shaped thermal material cell center.