Available in  03 Sizes [Outer Diameter (X) * Inner Diameter (Y)* Thickness (Z) {in mm}] ~ Small (Neonatal) = [90 X 45 X 20], Medium = [140 X 70 X 35] and; Large = [200 X 100 X 140]  in both green/ blue color options. 
Support's patient's head with complete coverage to back of head during prolonged surgeries
Protect head, neck and ears in various positions by complete pressure distribution