TST TST (Thermo Shield Technology) is a state of the art solution that provides the perfect protection level for digital equipment while creating an extremely lightweight product. It is featured on the important areas of the bag that are subject to shock. On Board This bag complies with most airline regulations for carry-on luggage. Due to ever changing carry-on requirements please check with your airline carrier prior to departure. Laptop Compartment This bag features a padded laptop compartme