TST Rib The TST Rib provides discreetly structured protection, where it counts. Located on parts of the bag that are sensitive to shock, the TST Rib will protect your gear from bumps and any unwanted 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 compartment which will allow you to always have your compu