Osprey Seral 7 Lumbar Hydration Pack for Hydration Packs

Prefer an off-the-back hydration solution instead of an over-the-shoulder pack? The Seral 7 lumbar pack was made for you.

Featuring an included 1.5-liter lumbar reservoir and magnetic bite valve that attaches to the hipbelt for easy access. Some lumbar packs have a tendency to creep around while you ride, they promise this one wont. Compression straps pull the pack into your lower back and wrap around your hips for supreme stability, even over technical terrain. A zippered main compartment and hipbelt pockets fit your spare tube, patch kit, CO2 inflator and more.

Technologies

Lumbar Carry – For riders who require hydration or gear storage while riding, but prefer the off-the-back carry and minimalism provided by lumbar packs.
Ride Stability – Their bike-specific, angled hipbelt and compression straps provide stability and comfort by keeping the pack close to your body. This is created by a breathable airmesh wrap hipbelt that contours over the hipbone, Osprey’s ErgoPull cross-body waist strap closure system that pulls the pack into the lumbar and side compression straps that pull the load close to your body, providing the most comfortable, secure and stable carry.
Included Reservoir – A dedicated hydration compartment stores an included 1.5 L lumbar reservoir for short to medium rides and compresses for stable carry, while the hose magnet attaches to the bite valve for easy access while riding.
Sustainable Materials – Constructed with PFC-free recycled bluesign®-approved nylon; a sustainable build that’s tough and durable to endure years of riding.

Features

AirScape backpanel with contouring lumbar wrap provides maximum stability
Included Osprey Hydraulics 1.5 L lumbar reservoir by Hydrapak
Magnetic hipbelt bite valve attachment
Large zippered main compartment with reservoir sleeve
Easily accessible zippered front pocket with internal tool organization
Dual zippered hipbelt pockets
Blinker light attachment with reflective graphic

Specifications

Size Guide

Fit should not be compromised for any other considerations. Body shape and sizing varies from customer to customer. Not every customer will fit every pack. Adjustable packs allow customers to fine-tune the fit for optimal carry performance. 

Hipbelt Sizing

To determine hipbelt size, measure around the hips at the iliac crest, not the waist. The padded portion should wrap well around the hips, leaving a gap of 3″ to 6″ between the tips of both hip pads when securely tightened.

Fixed Hipelt Sizing

XS 24-25″ / 60-114 cm
S 24-25″ / 60-114 cm
S/M 26-45″ / 65-114 cm
M 27-48″ / 69-121 cm
M/L 28-50″ / 70-127 cm
L 29-55″ / 72-140 cm
O/S 25-50″ / 64-127 cm