High Sierra HydraHike 2.0 4L Hydration Water Backpack for Hiking, Gray & Green nitrogen Color Changing Technology adjusts between

Color Changing Technology adjusts between 2200K to 6500K with dimmable brightness from 10% to 100%

Ensures the safety of you and your speakers with a vented design that efficiently manages heat to keep the speaker cool

all-welded steel with a Metal Shield finish

which adds extra support to your back and hips while sitting back and relaxing

Heating element: 40 watts

High Sierra HydraHike 2.0 4L Hydration Water Backpack for Hiking, Gray & Green nitrogen Color Changing Technology adjusts betweenWhether you're hiking, biking, cycling, or simply exploring the great outdoors, staying hydrated is important. High Sierra had the adventurer in mind when designing this collection of hydration backpacks for on the go hydration. The HydraHike 2. 0 4L Hydration Water Backpack can hold up to 4 liters of content and includes a 2 liter reservoir bladder. Use the top zipper to easily access the reservoir and main compartment to store other items like a