Technical backpack with a storage capacity of 12 L, equipped with 2 500ml flasks, offering unique comfort thanks to its storage and anatomical fit. The carrying solution for athletes with no limits.

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The PULSE 12.X bag is designed to meet the requirements of the most demanding athletes. This ultra-light backpack allows you to carry the equipment you need for short and long distances. Perfect balance between lightness and stability. Side Velcro to adjust your bag according to its capacity and size. Ultra-complete it has been designed by the feedback of our best athletes. Very breathable, it offers optimal comfort for the Trail, but also for mountain biking, or Nordic skiing. The hydration system is very quickly accessible with numerous storage spaces that perfectly maintain all the accessories and equipment required during the race. This bag makes it easy to transport and access all your needs even in extreme conditions with clever storage for sticks or technical vests.


  • Accessibility of the many storage spaces
  • Lightness
  • Stability
Volume (litres)12
Weight (grams)220g (without accessories)
MaterialsNylon ripstop 40D, waterproofness 1000mm
3D Mesh for a good breathability of the back Elastane
SizesS (< 1m70 / < 65kg) – M (1m70 à 1m85 / 65kg à 80kg ) – L (> 1m85 / > 80kg)
AdjustmentsAnatomical fit with unique adjustments: lateral Velcro to adjust your bag according to its capacity and your size.
Pectoral and ventral adjustment, for a better distribution of the load on the back, and a perfect stability, without disturbing the breathing.
CompartmentsLarge smartphone pocket (5'5) on right shoulder strap, with earphone passage, and with self-locking slider.
Small storage pocket with ultra-fast access for gels, bars, headband, on the top of the left shoulder strap of the bag.
Compartments with 2 flexible 500ml flasks.
Bi-elastic compartments, made from the experience feedback of our elite athletes to transport their bars, gels, very easily accessible and without tossing.
Central compartment easily accessible by a zippered closure. This central compartment is itself segmented by several independent compartments to easily store a water bag, but also small accessories to avoid their tossing and turning in full action.
4 Reflective loops for more security that allow you to attach a Mesh net accessory, to increase the volume of the bag if necessary
Expandable pocket with quick access (top and side) on the back of the bag, which allows access to its contents without having to remove the bag. Ideal for storing a light jacket, or as a quiver for sticks.
HydrationBag sold with 2 500ml flasks. Compatible compartment to accommodate a 1 to 2L water pocket on the back. High strap loops for holding Flasks tubes or water pocket.
SecurityOxsitis backpacks are equipped with a whistle that is easily accessible without putting the bag down and reflective strips for added safety.

How to choose your size?

Oxsitis backpacks are worn close to the body for maximum stability and comfort thanks to their breathable materials. Choose the size of your bag based on the usual size of your t-shirts.

Sizes: S (< 1m70 / < 65kg) – M (1m70 à 1m85 / 65kg à 80kg) – L (> 1m85 / > 80kg)

Care and maintenance

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

  • Hand wash
  • Ironing excluded
  • Machine drying excluded
  • Professional cleaning excluded
  • Bleaching excluded

Do not use laundry or detergents. Wash your bag with a soft sponge.

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