"Thermal gel"@en . . "Thermal gel was a protective gel like substance. Thermal gel was used in the shells of cocoon pods to dissipate the heat of re-entry. Additionally, when exposed to sufficient kinetic impact (such as that of the cocoon hitting the ground) the gel would harden, and absorb the kinetic force - protecting the cocoons contents from harm."@en . . . . "Thermal gel was a protective gel like substance. Thermal gel was used in the shells of cocoon pods to dissipate the heat of re-entry. Additionally, when exposed to sufficient kinetic impact (such as that of the cocoon hitting the ground) the gel would harden, and absorb the kinetic force - protecting the cocoons contents from harm."@en .