If you’re traveling economy class, the standard allowance is 1 cabin bag per passenger. Your carry-on can weigh up to 17lbs per piece, while dimensions must not exceed 15in x 7in x 9in. This is the case for most Star Peru international flights, however size and and weight allowances can vary due to factors such as aircraft type and cabin class. Have a look at your Star Peru plane ticket
for the exact rules.