This fits your .

When you're riding, you don't want to think about your pack, and the Syncro 20 takes the weight off your shoulders so you won’t. Spacious with plenty of pockets, you can carry all the layers, tools, and food you need for a long day in the saddle. Toss your worries aside about your pack hopping all over the place because the harness on this pack is shaped like wings—meaning the shoulder straps assume the natural curve your body does when you’re reaching for your handlebars. So, your pack stays super stable, even over the most technical terrain. A tensioned mesh AirSpeed backpanel provides superior ventilation and a removable hi-vis raincover ensures your gear doesn’t get drenched. Stay hydrated no matter how long you ride with an included 2.5-liter reservoir.

Osprey Syncro 20 Men's Bike Hydration Backpack Wolf Grey - BJM1LV9JU