Osprey Seral 4 Waist Pack - Women's 6012-331

Osprey Seral 4 Waist Pack - Women's

Free shipping for this item

Free store pickup

Order online, get it at your local MEC. It couldn’t be easier.

Rocksolid Guarantee

Shop with confidence. If it’s not working out, you can return it (consumables, undergarments and swimwear excluded).

Really. If it's not up to snuff after you use it (a couple times) you can still bring it back.

It lasts longer than 30 days, but not forever. We'll be fair about it.

Price match guarantee

Found a better deal in Canada? Up to 30 days after purchase – we’ll match it.

If you see a lower price for this exact item advertised online, in print or in a store, give us a call at 1 (888) 847-0770.

If it’s identical, brand-new, in stock, and sold and shipped by a Canadian-based retailer, we’ll match that price.


Show Description

A bum bag with a bladder? Yep. Osprey managed to tuck a 1.5L hydration pack into the Seral, with enough room for trail essentials. Lets you ramble without a backpack and without loaded pockets.

  • Padded air mesh back panel, for lightweight comfort and air flow.
  • Rear pocket fits a reservoir with room for a snack, tools and spare tube.
  • Includes Osprey Hydraulics® 1.5L lumbar reservoir by Hydrapak.
  • Magnetic attachment holds bite valve for convenient grabbing.
  • Reflective loop holds blinky light (not included).


Bluesign® Approved Material
Recycled content

Tech specs

Show Tech specs
Weight 280g
Ideal for Mountain biking
Main fabric 600-denier recycled polyester
Secondary fabric 400-denier recycled nylon
Hipbelt Padded
Volume 4L
Length 32cm
Width 19cm
Depth 11.5cm
Additional feature(s)
  • Reflective details
  • Hydration compatible (reservoir included)
Product sustainability
  • Bluesign® Approved Material
  • Recycled content
Made in Vietnam