CamelBak ThermoBak 3L Mil Spec Crux Hydration Pack 100oz

Overview of the CamelBak ThermoBak 3L Mil Spec Crux | 1683001000

When you are working a long shift or a multi-hour mission, stopping to dig out a water bottle is not an option. The CamelBak ThermoBak 3L Mil Spec Crux hydration pack keeps 100 ounces of water on your back and a drink tube at your shoulder, so you stay hydrated without breaking stride. This is one of CamelBak's most trusted minimalist packs, updated with the Mil Spec Crux reservoir that delivers 25% more water per sip.

Built from rugged 500D double-rip Cordura fabric, the ThermoBak (MPN 1683001000) is made to take daily abuse in the field. The low-profile shell carries a fully insulated reservoir, external fill access for quick cleaning, and six D-ring points for mounting to armor or MOLLE gear. It is a proven choice for military personnel, patrol officers, and EMS crews who need reliable hydration in Black, Coyote Brown, or Multicam.

Why it stands out

• 25% more water per sip from the redesigned Mil Spec Crux reservoir
• Insulated compartment with 5 mm closed-cell foam to keep water cooler
• Armor and MOLLE ready with six D-ring attachment points

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Key Features

• Material: 500D double-rip Cordura fabric for strength and abrasion resistance
• Capacity: 3 liters / 100 ounces of water
• Reservoir: Mil Spec Crux reservoir with Quicklink system, delivering 25% more water per sip
• External fill: Easy access to the reservoir for filling, cleaning, and adding ice
• Two-zipper fill cover: Top or bottom entry to the reservoir compartment
• Quick-release shoulder straps: Unclip for fast removal and stow inside a built-in pocket
• Adjustable sternum strap and hook-and-loop strap management for a secure fit
• Six D-ring points for attaching to any armor vest or MOLLE-equipped pack
• Insulation: Fully insulated reservoir compartment with 5 mm closed-cell foam
• Custom ID panel: Integrated hook-and-loop for name tags and unit badges
• Grommet drain holes at the bottom of the main compartment for easy draining
• BPA, BPS, and BPF free reservoir construction

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Specifications

Variant SKUs, MPNs, and UPCs

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Compatibility

The ThermoBak 3L Mil Spec Crux works as a standalone hydration pack or mounts to gear you already carry. The six D-ring points let it attach to any armor vest or MOLLE-equipped pack, and it pairs with the CamelBak Direct Armor Attachment System (D.A.A.S.) for wear on an IOTV or MTV. The Quicklink reservoir connection makes hose and reservoir swaps fast.

This is the standard full-length ThermoBak 3L. If you need a shorter pack that clears a duty belt, the ThermoBak 3L S uses a wider, shorter shape instead. The reservoir holds 3 liters, so do not overfill past the 100-ounce mark, and hand wash the reservoir to protect the insulation and fabric.

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Intended Users

Military service members rely on the ThermoBak to stay hydrated during patrols, training, and extended field operations where a low-profile, armor-mounted water source matters. Law enforcement officers use it for crowd control, perimeter duty, and long shifts that keep them away from their vehicle. EMS providers, firefighters, and search-and-rescue teams value the hands-free hydration during physically demanding calls. Preppers, hunters, and hikers also choose it for rugged reliability on the trail.

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What's Included

• One CamelBak ThermoBak 3L carrier in the color you select
• One 3 L / 100 oz Mil Spec Crux reservoir with Quicklink bite valve and delivery tube

A reservoir cleaning kit and replacement bite valves are sold separately.

Available at WCUniforms

WCUniforms is a veteran and family-owned specialty retailer focused on uniforms, tactical gear, and public safety equipment. We supply law enforcement, EMS, fire, and military professionals with field-proven gear like the CamelBak ThermoBak, backed by knowledgeable service. Shop with confidence at wcuniforms.com, where first responders and professionals find the equipment they trust.