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Osprey Seral 4L Bike Hydration Lumbar Pack

★★★★★ 4.7 118 reviews

US$40.00

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US$40.00

Price when purchased online

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Product details

Management number	236313910	Release Date	2026/07/09	List Price	US$40.00	Model Number	236313910
Category	Bags & Packs General

Seral 4L Bike Hydration Lumbar Pack

Description Key Attributes Carry Information Specifications

Hydrate fast and ride light with this compact, stable lumbar-style bike pack featuring an integrated low-profile Hydraulics™ 1.5L LS Reservoir. A magnetic attachment secures the bite valve to the hipbelt, while a bike-specific airmesh wrap hipbelt and close-to-body AirScape™ backpanel deliver breathable, bounce-free comfort. Vertical straps hold a chin guard or extra layer for added versatility.

Reservoir Included

Drinking while riding has never been easier with the included Hydraulics™ LS Lumbar 1.5 Reservoir, smart hose routing and a magnetic bite valve attachment.

Rider-Focused Features

Enhance every ride with stabilizing side compression, dual tuckaway front accessory straps designed to secure a chin guard or extra layer, and more.

AirScape™ Backpanel

Pedal with the comfort and stability of a mesh-covered, extra-thick ridged foam backpanel featuring a center airflow channel.

bluesign® PRODUCT

This product meets bluesign® PRODUCT requirements, which means materials and components have been selected that adhere to rigorous third-party environmental and social criteria during production.

AirScape™ Backpanel

Mesh-covered, extra-thick ridged foam with center airflow channel provides comfortable, stable, close-to-body carry Made with 50% recycled EVA foam

Hipbelt

Breathable airmesh wrap hipbelt provides stability on rough terrain Crossbody ErgoPull hipbelt system ensures snug fit for optimal load support

MAIN

bluesign® APPROVED, 100% recycled 300D polyester, DWR treatment made without PFAS

LINING

bluesign® APPROVED, 100% recycled 210D nylon, DWR treatment made without PFAS

MESH

Backpanel & Hipbelt Mesh: bluesign® APPROVED, 100% recycled polyester WARNING: This product can expose you to chemicals including dimethylformamide, which is known to the State of California to cause cancer. For more information, go to oehha.ca.gov/proposition-65/about-proposition-65