Riders 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-tenacity nylon with a PFC-free DWR coating. Features &bull; Extra thick ridged foam with center air channel for excellent ventilation &bull; Airmesh wrap hipbelt with zippered fabric pockets provide stability and breathability &bull; ErgoPull waist strap closure system allows for proper snug and stable fit &bull; AirScape backpanel with contouring lumbar wrap provides maximum stability &bull; Included Osprey Hydraulics 1.5L lumbar reservoir by Hydrapak &bull; Magnetic hipbelt bite valve attachment &bull; Large zippered main compartment with reservoir sleeve &bull; Main compartment tool organization and internal zippered pocket Materials &bull; Main bluesign®approved recycled 600D PET polyester, PFC-free DWR &bull; Accent & Bottom bluesign® approved recycled 400D high-tenacity nylon, PFC-free DWR Specifications &bull; Dimensions: 19cmx32cmx11.5cm &bull; Weight: 0.275kg &bull; Volume: 4L

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Seral Lumbar Hydration Pack 4L

The Last Hunt

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I am a big fan of this bag. To start off, the colour/design is very appealing! I have a full backpack hydration pack and I prefer this for biking, hiking or even paddle boarding. I love that my back doesn’t get sweaty! It is well distributed so I can barely tell I’m wearing it for the most part. It fits 1.5 L of water with a little extra space for my phone and some snacks.

In love

I wanted a lumbar pack that was smaller than my camel bak and this is perfect. The 1.5 litre bladder is easy to fill. There is lots of space for snacks. There is a little mess sleeve on the inside that is perfect for a tool. Also, there is an inside pocket for my phone and loop for keys. It is super comfy and my back doesn’t get sweaty and my shoulders don’t hurt like from my big camelbak.

Perfect

Well designed and thought out pack for hiking, walking, cycling. 

Be aware, the bladder is included, but doesn&#x27;t detach at the base of the hose, as some do.

Classic Osprey`

I really like this hydration bag. I usually use a lighter backpack with a hydration bag , but I wanted something a smaller for shorter outings, but still hands free and the ability to take a good amount of water .. as well hold a few items.. phone being one. This bag is perfect. It’s very well made, as all osprey products are… I bought one for my girlfriend for a gift.. I’m certain she will also love it!

Nice size and fit.

I was looking for something that I would be able to take on search and rescue callouts where we are often in the forest and climbing through swamps and trees and a bigger pack can get caught up. This fit the bill and holds water, clothing and all emergency supplies nicely. It fits in the small of my back and I haven&#x27;t been caught in trees since.

Perfect for search and rescue

Sac ceinture reçu rapidement. Bon format, semble confortable. Je l’ai acheté pour le vélo de montagne donc je ne lai pas encore essayé à l’extérieur. Pour le look, je recommande.

Très bon sac ceinture d’hydratation

As usual with Osprey, this pack is well constructed with thoughtful details like the bike tail light holder. However without any pockets on the sides to put things I need access to quickly, I’m not sure I’ll keep it. I would move up to the Seral 7 to get this feature because it’s too big for my needs.

Good size/construction

Good for biking, running, skiing; the mouth-piece sometimes gets knocked off the magnet. You could clip one of those retractable key-card clips to it to help with that. Besides the water pouch, there is one main compartment and a zippered pocket. Personally I&#x27;d have preferred more pockets, maybe on the main pack or as hip belts, without making the main pack as large as the 7L one.

Exactly as advertised

I use it for XC skiing and MTB. Very stable and doesn&#x27;t restrict my breathing.

Osprey Serial 4

Ce sac est parfait pour randonné et ski de fond. Juste bonne grosseur.

Mavi Tess Super Skinny Jeans - Women's

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