the present disclosure includes systems and techniques relating to stadium seats or a seat cushions composed of materials configured in a sandwich construction . in some implementations , an apparatus , systems , or methods can include a durable bottom layer that is adapted to provide traction on a bottom surface of the portable composite stadium seat cushion , an insulating core layer that is adapted to provide contoured and cushioned support for sitting on the portable composite stadium seat cushion , and a pliable top layer that is resilient and protects the core layer .