Kata APSS-DH-N Advanced Padded Shoulder Strap with Snap Hooks. 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 The padded, non-slip, reversible shoulder strap can be used on both sides. Conforms to fit your shoulder when carrying a heavy load When worn across the chest, the curved shape keeps the strap from digging uncomfortably into the neck 3D surface allows excellent airflow between clothing and strap, while the dot fabric texture prevents the strap from slipping