Backpack 7L "Le sac" black

Designed in the form of a vest, the 7-liter hydration backpack "Le sac" is the ultimate versatile trail-running accessory, allowing you to easily carry all your sports equipment during your trail runs, running, Nordic walking or short hikes.

Light, comfortable, resistant, it adapts perfectly to all morphologies thanks to its lateral elastic belt and its pectoral and abdominal adjustment straps.

The 3D mesh back pads ensure good air circulation between the bag and the back. The water-repellent material and heat-sealed closures provide extra protection for your gear from light rain, moisture and wind.

The multitude of interior and exterior pockets will allow you to store all your running gear: flasks, water pouch, phone, keys, poles, nutrition, jacket etc...

More details

66,67 €

Available Delivery within 2 to 3 days

By buying this product you can collect up to 66 loyalty points. Your cart will total 66 loyalty points that can be converted into a voucher of 3,30 €.

14 days to change your opinion 
Satisfied or reimbursed

Free shipping from 100€ with Colissimo

Secure payment

Manufactured in France (Booster, ProRecup, Recovery et Confort ranges)

Question, advice, order

+33 4 77 52 11 47

Running-trail hydration backpack "Le sac" black


Made of 3D mesh, the pads located at the level of the back allow a better air circulation between the bag and the back, while ensuring an excellent comfort and an optimized posture.


"The bag" has a multitude of external pockets (10) : 

- 8 elastic pockets positioned at 360° including 2 pockets for flexible flasks of up to 500 ml.

- 1 zipped pocket for smartphones.

- 1 large back pocket

and inside (4) :

- 2 elastic pockets.

- 1 zipped pocket.

- 1 pocket for the survival blanket.

Allowing you to bring with you all the necessary equipment. The backpack also has a compartment for a 1 liter water bag (not included), and 3 outlets and a clip for the water bag hose.


Designed in the form of a vest, the side elastic waistband provides effective support and prevents tossing and turning during runs. The chest and abdominal adjustment straps with a push button can be adjusted to the height of the bag and then adjusted to the body shape by tightening/loosening the strap.


The specific design of the backpack combined with strategically placed back pads ensure optimal ventilation to prevent wet backs.


Thanks to our strategically placed attachments, you'll have the choice of carrying your running poles on the front of the backpack thanks to adjustable elastics and stoppers, but also on the back of the bag in the two mesh pockets.


The bag is made entirely of water-repellent and resistant material. This water-repellent material allows you to keep your belongings dry in the event of light rain.


Heat-sealed closures protect your equipment from water, moisture and wind.

Follow us