Osprey syncro 10 backpackarrive at your destination cool calm and collected our syncro series are leaner lighter and faster than ever before taking ventilation to the next level the syncro 10 features our airspeed back system and a lightwire frame the pack also has a ventilated biostretch harness further increasing airflow meaning that even on the hottest rides youll enjoy incredible ventilation and load stability the streamlined profile of the pack and lidlock bike helmet attachment