Osprey Seral 4 apparel The best aluminum endurance bike

The best aluminum endurance bike we’ve ever created

Dual water bottle pockets

The DPS Fixed Aluminum Ski Poles are a reliable workhorse pole

• 1200 lumen Boost Mode

(Women's size 7)

Osprey Seral 4 apparel The best aluminum endurance bikeRiders looking for a low profile lumbar pack with integrated hydration need look no further than the Seral 4. This slim waistpack features a 1. 5 liter bladder with our updated high strength magnetic coupling for improved hose management even in rough terrain. The Seral 4 has enough storage capacity for ride essentials, such as a spare tube, CO2 and multi tool and, of course, snacks. Constructed with high quality bluesign approved recycled high