Pulse 12 Ultra W


12L women’s trail running backpack.

Size guide

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Developed in collaboration with numerous athletes, the Pulse 12 Ultra women’s trail running vest is specifically adapted to the female body type. It will bring you comfort and stability on all your outdoor outings (trail running, hiking, Nordic walking, cross-country skiing…). No more discomfort or rubbing!

Its 3D Coolmax technology located on the straps and the back panel, favouring thermoregulation, offers excellent breathability. Its robust 40D Ripstop fabric (10000mm waterproof) is a guarantee of quality and durability and will keep your belongings dry.

Organize your personal belongings and mandatory running gear easily with the many storage compartments.

If you run with poles, you’ll especially appreciate the Easy Fix Pole Control system or the expandable quick access pocket on the back of the running vest.

And if you’re a race number fanatic, the Pulse 12 Ultra trail bag is equipped with a clever magnetic race number holder. No more holes in your shirts!

The Pulse 12 is our best-seller and is recognised by many female runners for its quality and reliability.

This new trendy colour will go perfectly with the tee-shirt and the short skirt from the same collection!


  • Large storage capacity
  • Versatile: for short and long distance trails
  • Ultra light
  • Comes with 2 x 500ml soft flasks
Ref41620 170
Volume (liters)12 L
Weight (grams)220 g
MaterialsNylon ripstop 40D, 10000mm waterproof
3D mesh with Aiback Control system for good back ventilation
SizesXS/S, M/L
AdjustmentsAdjustment with side velcro to fit your bag according to its capacity and your size.
Adjustable chest and belly strap for better load distribution on the back and perfect stability.
- 1 waterproof zipped smartphone pockets with self-locking slider and passage for headphones
- 2 compartments for 2 x 500ml water bottles.
- 2 compartments in bi-elastic material for nutrition

- Central compartment segmented into several independent compartments easily accessible by two zips, one of which is vertical for quick access to equipment.
4 reflective loops for added security to attach a mesh accessory, to increase the volume of the bag if needed
Hydratation & accessoriesBackpack sold with 2 Flasks of 500ml. Compartment compatible with a 1 to 2L water bag in the back.
Bag equipped with the Easy Fix Pole Control quick release system.
SécuritéOxsitis backpacks are equipped with a whistle that is easily accessible without putting the bag down and reflective strips for added safety.

How to clean it?

Oxsitis bags are made of technical materials with water-repellent properties.

  • Hand wash
  • No ironing
  • Don’t tumble dry
  • Professional cleaning excluded
  • No bleaching

Don’t use detergents or cleaning products. Wash your bag with a soft sponge.