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Size

Flanges

Pay in 4 installments with no fees on orders of €70 or more
Pay in 4 installments with no fees on orders of €70 or more

RK3 BLUE

3L Trail Vest Bag

65g

49,99 €

Blue


Pay in 4 installments with no fees on orders of €70 or more
Pay in 4 installments with no fees on orders of €70 or more
Eligible for Promotion
RK3 Blue

RK3 3-liter hydration vest for trail running

Designed by our team, this ultra-lightweight vest-style bag (only 65 g) will become your go-to companion.
With a 3-liter capacity, it offers the perfect balance between minimalism and functionality. Ideal for runners seeking extreme lightness, it’s suitable for all distances—whether for a daily workout, a marathon, or a demanding ultra-trail race.

Carrying Capacity

Carrying Capacity

3 L.

Weight

Weight

65 gr

Number of pockets

Number of pockets

3

Zip

Zip

No

Distance

Distance

Short

Distance

Distance

Averages

Training

Training

Yes

Competition

Competition

Yes

• 2 easily accessible side pockets, ideal for storing energy bars, a phone, or keys.

• 1 large back pocket with aL capacity, perfect for carrying a jacket, a hat, or other essential gear.

• 2 front pockets compatible with 250- to 500 ml water bottles for easy hydration on the go.


The bag comes with two 350-ml soft-sided flasks. You can also choose 500-ml flasks as an option, depending on your needs.

Made in the PRC.

Composition

• Lining: 92% polyester - 8% spandex
• Outer fabric: 100% polyester

Interview

• Hand wash recommended, or wash on the delicate cycle at 30°.

Delivery

  • Ships within3 to 4 days(with some exceptions)
  • Free delivery on orders of €100 or more in France / Flat rate of €10 for Europe

Returns

  • You have14 days from the date you receive your order to return the items to us if they are not suitable.
  • You are responsible for shipping costs
  • Exclusions: Customized products and items subject to hygiene restrictions (underwear, hair ties, headbands, flasks, glassware, and socks) cannot be returned or exchanged.

Overall rating: 4.7272725 / 5 based on 11 reviews.

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Review Highlights

Reviews

Rocket 3 Hydration Vest

"Perfect—it stays in place. The side panels are made of 500 fabric, and they squeeze the chest a bit for women, but once you’ve had a little to drink, they become more flexible and conform better to your shape. Perfect for a 2-hour run, for example; for anything longer, you’ll need to go up a size. One small criticism: the front pockets are a bit deep. If you slip something inside—like keys or other small items—you won’t lose them, but on the other hand, reaching in to grab something like a energy bar is much more difficult."

Caroline R. (5/5)

My First Hydration Pack

"I don't have much experience with it, but I think it's well-designed—it doesn't chafe when I use it, it's comfortable, and I really like the pattern, too."

Fiona C. (5/5)

Lightweight and functional!

"Great value for the money. Lightweight, functional, and feels like a second skin—you forget you’re wearing it once it’s properly adjusted; plus, there’s a wide selection of colors and styles. One minor downside: the elastic bands, which are supposed to hold the flasks in place—as shown in the video—don’t stay secure with the flasks provided; they just keep coming loose while running. It doesn’t matter if you tighten them or take a little extra time to put them on before setting off. However, even without these elastic bands, the water bottles stay in place—you just need to reach for the mouthpiece to drink."

Guillaume (4/5)

Great! 👍

"Great 👍"

Marie-Paule L. (5/5)

Very practical and very

"Very practical and very comfortable to wear."

Claire D. (5/5)

A light, pleasant parfait

"A lightweight, comfortable blouse"

Charlène G. (5/5)

Flawless, lightweight, and practical—it lasts

"Perfect—lightweight, practical, fits well, ideal for trail running, and comes in gorgeous colors!"

Christophe A. (5/5)

It's great to run with

"It's great to run with this hydration vest! The only minor issue is that, even though I bought the smallest size available, it's still a little too big. I wish I could tighten it a bit more. But it still provides good support!"

Oriane S. (4/5)

The product meets expectations.

"The product met my expectations. Thank you."

Valerie G. (5/5)

Not tested yet; it's

"Haven't tried it yet—it's a gift—but the delivery was fast, and the packaging was fine. I recommend it."

Mila C. (5/5)

Q&A

RK3 BLUE €49.99