Hydration pack specialist Osprey has been gradually expanding their range over the years, and for 2015 they’ve updated the Syncro by putting it on a bit of a diet, with a claimed a 30% weight reduction compared to the previous model. As the name suggest, the Syncro 15 can carry 15 liters of cargo, and holds Osprey’s own 3 liter reservoir (sold separately) in a dedicated sleeve. The reservoir has an large cap that makes it easy to clean, and the whole thing holds it shape no matter how much water it’s carrying. The hose has an drip-free nozzle and a magnet clip attaches it to the shoulder straps. Biostretch ventilated harness straps at the waist and chest and Osprey’s AirSpeed suspension, a mesh panel stretched over a Lightwire frame, ensure the pack is elevated off your back and held securely in place.