40 oz Trek Tumbler with Handle and Straw Lid - Graphite Cupholder

In this review of the 40 oz Trek Tumbler the bottom line is simple: anyone who wants a large, cupholder-friendly travel cup that actually keeps beverages cold for hours will find a lot to like. The reviewer found the tumbler's strongest asset is its insulation and capacity - 40 oz holds plenty of liquid and ice while fitting most vehicle cup holders. It comes with an ergonomic handle and a threaded straw lid that resists leaks, making it a practical daily driver for commutes, long drives, or outdoor work.

Key Features

• Double wall vacuum insulation: Keeps drinks hot or cold for hours so you do not have to refill or re-ice frequently during a long day.
• Cupholder friendly design: The tapered body fits most standard cup holders while still offering a 40 oz capacity for extended use.
• Ergonomic handle: A sculpted handle provides a comfortable grip so the large cup remains easy to carry and lift.
• Straw lid with two straws: The leak resistant insulated lid is four-way threaded and includes a color-matched straw plus a clear Tritan straw for preference and replacement.
• Durable stainless steel: Made from 18/8 stainless steel without lead, BPA, or phthalates for long-lasting safe use.
• Dishwasher safe: Many customers report easy cleaning in the dishwasher, simplifying after-use care.

Who It's For

The Trek Tumbler is best for commuters, outdoor workers, parents, and anyone who wants a single cup that holds a full day of hydration or iced drinks. Its combination of 40 oz capacity, handle and cupholder-friendly footprint makes it useful for long drives and active days.

Those who want a leakproof thermos for truly leak-free transport in bags should note that the straw lid is leak resistant but not a fully sealed travel cap; if absolute spillproof performance while tossed in a bag is required, a threaded sealed travel lid might be a better match.

Pros & Cons

Pros

• Excellent ice retention and temperature control for long outings.
• Comfortable handle plus a design that fits most cup holders.
• Includes two straws and a versatile straw lid with multiple straw placements.
• Made of durable 18/8 stainless steel and free of lead, BPA and phthalates.

Cons

• Some users report the handle can break under heavy stress, so treat it as durable but not indestructible.
• The straw lid is leak resistant but not a fully sealed vacuum travel cap for tossing into a bag.

Specifications

Our Verdict

The Simple Modern Trek 40 oz in Graphite is a strong choice for anyone who wants a high-capacity, cupholder-friendly insulated tumbler that keeps drinks cold and is easy to carry. It offers good value thanks to reliable temperature performance, durable stainless construction, and a thoughtful lid and straw system; buyers who need a fully sealed travel bottle should consider a different lid option.

Frequently Asked Questions

Does the cup fit standard cup holders?
Yes, the tapered design is made to fit most vehicle cup holders while still holding 40 oz.

Is the lid completely leakproof?
The straw lid is designed to be leak resistant but is not a fully sealed travel cap for tossing into a bag.

Can it go in the dishwasher?
The cup and lid are generally dishwasher safe and many customers report cleaning it this way, though hand washing may extend handle life.