Nav 35oz Leak Proof Insulated Travel Tumbler - Dark Aura

In this review the BruMate Nav 35oz travel tumbler is evaluated for commuters, parents and anyone who needs a large, truly leakproof cup on the go. The bottom line: it is best for people who want a big, insulated mug that fits most cup-holders and reliably locks shut, because the BevLockTM system and OctaLock thread make it the only 35oz design that aims to be 100% leakproof while keeping drinks hot or cold for hours.

Key Features

• Fully leakproof BevLock: The locking lid is designed so you can carry the tumbler in bags without worrying about spills, ideal for travel and commuting.
• BevGuard insulation: Keeps beverages cold for 24+ hours or hot for up to 6 hours, preserving temperature without a metallic taste.
• Cup-holder friendly size: The 35oz shape is engineered to fit most vehicle cup-holders while still offering large capacity for long outings.
• Non-slip base: A silicone bottom helps prevent sliding and avoids leaving rings on desks and tables.
• OctaLock thread system: The patent-pending threaded lid gives eight sipping positions and a clear lock/unlock motion for precise closure.
• Lifetime warranty: The product is backed by a lifetime guarantee, which provides long-term confidence in durability.

Who It's For

The Nav is well suited for commuters, parents, road trippers and anyone who carries a large drink through daily routines and needs true leak protection. Its insulation performance also makes it a good choice for outdoor use and long work shifts where topping up frequently is impractical.

It is less ideal for buyers who want a very small or ultra-lightweight cup; those seeking a compact 12oz or 16oz tumbler should look elsewhere. Also, customers who prefer a flip-top or straw-first design may find the threaded OctaLock system different from familiar lids.

Pros & Cons

Pros

• Reliable leakproof locking lid that lets you transport drinks without spills.
• Excellent temperature retention with 24+ hours cold and 6 hours hot performance.
• Large 35oz capacity while remaining cup-holder friendly for most vehicles.
• Solid build quality and finishes, plus a lifetime warranty for peace of mind.

Cons

• Some users report the lid mechanism can get stiff or require practice to operate smoothly.
• The larger size may be heavier when full compared with smaller tumblers.

Specifications

Our Verdict

The Nav 35oz is a smart pick for anyone who needs a large, dependable travel tumbler that truly locks out leaks and maintains temperature for long periods. Its combination of BevLock leak protection, long-lasting insulation and cup-holder friendly shape make it strong value for people who prioritize spill-free transport and day-long temperature control.

Frequently Asked Questions

Is the lid really leakproof?
The BevLock locking lid is designed to be 100% leakproof when properly closed and locked, allowing you to carry it in bags without spills.

How long will it keep drinks cold or hot?
Thanks to BevGuard insulation it keeps drinks cold for 24+ hours and hot for about 6 hours under typical conditions.

Can I put it in the dishwasher?
Most finishes are top-rack dishwasher safe, but check the finish guidance before full dishwasher use.