FIT4V

Ultralight Hydration Running Backpack

$30.99

Color:

QUANTITY:

Move Light And Stay Ready

Meet the Ultralight Hydration Running Backpack, a professional trail-running hydration backpack created for marathons, cycling, hiking, and endurance training. Its nylon construction combines an ultralight breathable vest-style profile created for functional movement, helping you stay prepared without unnecessary complication. The considered design keeps essential items or information accessible while maintaining a clean, active look for regular use.

Key Features:

Ultralight construction helps reduce carrying bulk
Breathable vest-style fit supports active movement
Functional backpack design keeps essentials close on the trail
Nylon material provides practical everyday durability
Multiple style options support different running preferences

Perfect For:

Trail running and marathon training
Road cycling and endurance rides
Hiking and fast-paced outdoor walks
Lightweight hydration-focused workouts

Specifications:

Material: Nylon
Product Type: Backpack
Model Number: BAG642
Design: Hydration vest backpack
Available Styles: Multiple BAG642 configurations

Whether you are chasing a new distance goal or moving quickly through outdoor terrain, this product helps make the experience more organized and intentional. Its lightweight comfort and functional close-to-body storage deliver the dependable functionality needed to approach each routine with greater confidence. It is a considered choice for people who value practical design, clear functionality, reliable materials, and equipment that fits naturally into a busy active schedule.

Size Guide

How to Measure

Bust or chest: Measure around the fullest part of your chest.
Waist: Measure around your natural waistline.
Hips: Measure around the fullest part of your hips.
Foot length: Measure from the back of your heel to the tip of your longest toe.

Apparel Size Guide

Use your body measurements to help select a size. Measurements are shown in inches first, with centimeters in parentheses for reference.

Size	Bust / Chest	Waist	Hips
XS	30.7–33.1 in (78–84 cm)	23.6–26.0 in (60–66 cm)	33.1–35.4 in (84–90 cm)
S	33.1–35.4 in (84–90 cm)	26.0–28.3 in (66–72 cm)	35.4–37.8 in (90–96 cm)
M	35.4–37.8 in (90–96 cm)	28.3–30.7 in (72–78 cm)	37.8–40.2 in (96–102 cm)
L	37.8–40.2 in (96–102 cm)	30.7–33.1 in (78–84 cm)	40.2–42.5 in (102–108 cm)
XL	40.2–43.3 in (102–110 cm)	33.1–36.2 in (84–92 cm)	42.5–45.7 in (108–116 cm)
2XL	43.3–46.5 in (110–118 cm)	36.2–39.4 in (92–100 cm)	45.7–48.8 in (116–124 cm)

Important: This chart is a general reference only. Sizing may vary between products and suppliers. If a product-specific size chart is available, always use that chart before ordering.

Footwear Guide

For the most accurate fit, measure your foot from heel to longest toe and compare the measurement below.

Foot Length	US Women	US Men	EU
9.1 in (23.0 cm)	6	4.5	36
9.4 in (24.0 cm)	7.5	6	38
9.8 in (25.0 cm)	8.5–9	7–7.5	40
10.2 in (26.0 cm)	10	8.5	42
10.6 in (27.0 cm)	11.5	10	44

Fit Tip: Supplier sizing can vary. Always choose based on actual measurements rather than your usual letter size. When a product-specific size chart is available, use that chart as the primary sizing reference.