FLASK FIT FINDER

Whether you're replacing an old flask, upgrading your gear, or adding an extra hydration solution, HydraPak's Flask Fit Finder helps you select the perfect flask for your setup.

Select your running vest brand, model, and size to find compatible HydraPak flasks.

Trusted By Hundreds of Brands

HydraPak is the trusted hydration partner of the world’s leading running brands. These brands rely on us to design high-performance hydration flasks that fit seamlessly in their running vests, belts, and packs. Simply put, our flasks fit over 90% of the gear in the market.

KEY FIT FACTORS

To ensure a comfortable, stable fit, finding the right flask for your running vest or belt comes down to three key considerations: pocket dimensions, pocket material, and flask style. The right fit means the flask sits securely, with no movement or risk of falling out. Use our Flask Fit Finder guide to help select your ideal flask based on your pocket size and preferred features.

STEP BY STEP FIT GUIDE

STEP 1: MEASURE YOUR POCKET DIMENSIONS

Pocket Width and Depth: Measure the width and depth of your pocket, ensuring compatibility with the flask dimensions. We recommend measuring in centimeters or milimeters for ease.

Pocket Opening Width: Also measure the width of the pocket's opening, especially if you're considering a pinch-welded flask that will need to fit smoothly into tight spaces.

STEP 2:IDENTIFY YOUR POCKET MATERIAL & FIT PREFERENCE

Tight, Form-Fitting Pockets: These pockets often use stretchy fabrics that hug the flask. A pinch welded bottom allows easy insertion and is better suited for narrow pockets where the flask is pushed to the bottom.

Slightly looser, roomier pockets: Choose a 3D welded bottom to add stability to pockets with more room to keep flasks from moving around.

STEP 3:LENGTH AND PROFILE CHECK FOR COMFORT

Check Flask Length Against Pocket Height: Ensure the flask length doesn't exceed the pocket height and allows for easy access. For running belts, longer and slimmer flasks are usually ideal to minimize skin irritation.

Slim Profile for Running Belts: When using a belt, opt for flasks with a flatter design, especially with pinch welded bottoms, for a comfortable horizontal fit.

COMPATIBILITY CHART

Flask Fit

BALLON UltraFlask Speed ​​500 ml UltraFlask Speed ​​600 ml

SoftFlask Speed ​​500 ml

PocketFlask 500ml
AJUSTEMENT DE POCHE SUGGÉRÉ*

Largeur : 2-3 pouces / 50-75 mm

Profondeur : 2-2,5 pouces / 55-60 mm

Longueur : 6-7,5 pouces / 150-200 mm

Largeur : 3-4 pouces / 75-100 mm

Profondeur : 2-2,5 pouces / 55-60 mm

Longueur : 6-7,5 pouces / 150-200 mm

Largeur : 3-4 pouces / 75-100 mm

Profondeur : 2-2,5 pouces / 55-60 mm

Longueur : 8-9 pouces / 210-230 mm

Largeur : 3-4 pouces / 75-100 mm

Profondeur : 1,5-2 po / 37-50 mm

Longueur : 9-10,5 pouces / 230-265 mm

CAPACITÉ 500 ml / 17 oz 600 ml / 20 oz 500 ml / 17 oz 500 ml / 17 oz
STYLE DE FLACON Soudure 3D Soudure 3D Soudé par pincement Soudé par pincement
LONGUEUR 7,48 pouces / 190 mm 7,48 pouces / 190 mm 8,27 pouces / 210 mm 9,06 pouces / 230 mm
LARGEUR 2,17 pouces / 55 mm 3,15 pouces / 80 mm 3,15 pouces / 80 mm 3,15 pouces / 80 mm
PROFONDEUR 2,17 pouces / 55 mm 2,17 pouces / 55 mm 2,17 pouces / 55 mm 1,46 po / 37 mm
STYLE DE CASQUETTE Remplissage rapide Remplissage rapide Remplissage rapide Verrouillage par rotation
DIAMÈTRE DU BOUCHON 1,65 po / 42 mm 1,65 po / 42 mm 1,65 po / 42 mm 1,1 po / 28 mm
*Remarque : Veuillez utiliser nos mesures de poche suggérées comme guide. La forme de certaines poches de gilets et de sacs à dos peut varier et modifier l’ajustement.