Choose a running vest – size & pack volume | Outdoor Buddies

Outdoor Buddies Carry what you need

Choose a running vest based on your pack size, your body shape, and the ability to refill along the way. A vest should fit securely even with full bottles, while still allowing you to breathe freely and access what you use during your run.

The number of liters helps you compare space, but does not tell you how the vest fits. Start by laying out the equipment for your usual long trip or planned race. Then try a vest with the same capacity.

How many liters does a running vest need to hold?

Consider the time between refills and the equipment you need to bring. A short but remote mountain hike may require more packing than a longer run with frequent stops. The pack volume of the vest and the amount of drink you can carry are also two different things.

The intervals are practical examples, not a rule for a certain distance. Volume can be reported differently between models, depending on stretch pockets, among other things. Sample packs rather than choosing solely from the liter number.

If you only need to carry your phone, keys and a small amount of accessories, a running belt may be sufficient. When you need more drink, easily accessible energy and extra clothes, a vest is often easier to organize.

See running belts and waist bags

How to choose the size of your running vest

Measure according to the size guide for the model in question. Chest width is a common starting measurement, but the fit is also affected by torso length, shoulders, bust and where the bottles end up. A larger pack volume does not automatically mean a larger body size.

1. Try on the right layers. Wear similar clothes to those on your passports.
2. Fill the bottles. Put in approximately the same equipment as you intend to carry.
3. Adjust the chest straps. The vest should fit snugly without you having to tighten it to the maximum.
4. Breathe deeply and move your arms. Check pressure against your chest, neck and armpits.
5. Jog, take side steps and climb stairs. Feel if bottles or back pockets bounce.
6. Remove some of the contents. Try adjusting when the bottles are lighter and the energy has decreased.

If the vest only becomes stable when you pull the straps all the way to the end, a different size or model may work better. Also compare the design of the bottle pockets. They should be within reach and not create uncomfortable pressure.

Women's model, men's model or unisex?

Choose based on the actual fit. Models may differ in cut, placement and bottle height. Feel free to try more than one style if a vest feels good across the back but is tight in the front. The label alone does not determine which one fits best.

Softflasks or hydration bladder?

Front-loading bottles make it easy to see how much is left and refill one container at a time. A hydration bladder can provide additional capacity, but you need to check how it fits and how the hose is routed. Choose based on refill options and how you want to distribute the weight.

Two bottles of 500 ml each give a total carrying capacity of one liter. This is a specification of the containers, not a recommendation of how much to drink per hour. Plan the amount according to conditions and your own needs and do not count on unreliable water sources.

Check what is included in your purchase. Bottles, bladders and hoses are sometimes sold separately. The height, shape and opening of the bottle need to work with the vest pockets; not all containers fit equally well in all models.

See bottles and accessories for running vests · Read our energy guides

Organize your packing so you can reach the right things

Place things you use frequently where you can reach them without taking off your vest: drinks, energy, gloves and phone if the pocket is suitable for them. Put an easily accessible spare set of clothes in a pocket that can be opened without the rest of your pack falling out.

Protect your phone and dry spare clothes from getting wet. Don't assume that regular vest material or a zipper will make the contents waterproof. Distribute heavier items close to your body and test if uneven packing causes the vest to pull on one side.

Rods and quivers

Check how the poles are attached, their folded length and whether the holder requires special attachment points. Try taking out and putting away the poles with the vest filled. A holder that fits when the vest is empty may be harder to reach during a race.

Compare pole holders and quivers Read the guide to running poles

Wash and dry after long sessions

Empty all pockets and follow the vest's washing instructions. Clean bottles, valves and hoses according to their instructions and allow the parts to dry thoroughly. Check elastics, zippers and attachment points before your next long ride. A worn bottle or valve can sometimes be replaced without having to replace the entire vest.

Frequently asked questions