Stroid FlaskMaster 40oz Tumbler – Ultimate Hydration, Reimagined

Stay hydrated in style and power through your day with the Stroid FlaskMaster 40oz Tumbler, the ultimate fusion of function, form, and freshness. Whether you’re hustling at work, sweating it out at the gym, or soaking up the sun outdoors, the FlaskMaster is your hydration sidekick – built to last, built for life.

Why Choose the Stroid FlaskMaster 40oz Tumbler?

When it comes to premium water bottles and tumblers, not all are created equal. The Stroid FlaskMaster stands above the rest with cutting-edge insulation, rugged design, and user-first features that deliver where it counts. It’s more than just a tumbler — it’s a lifestyle essential designed for performance, convenience, and style.

Key Features

✅ Massive 40oz Capacity

The FlaskMaster 40oz tumbler is made for those who take hydration seriously. With enough volume to last for hours, it’s perfect for long days at the office, extended workouts, hikes, road trips, or beach adventures. No more constant refilling — just grab, sip, and go.

❄️ Advanced Double-Wall Vacuum Insulation

Keep your drinks ice-cold for up to 24 hours or piping hot for 12 hours. Thanks to our industry-leading insulation tech, your beverage stays at the perfect temperature all day — whether you’re sipping chilled lemon water or a morning coffee on the go.

🧊 Sweat-Proof & Leak-Proof

The FlaskMaster is completely condensation-free, so it won’t sweat in your bag or on your desk. And with a leak-resistant lid and a secure silicone seal, you can toss it in your gym bag or backpack without a second thought.

💪 Rugged Stainless Steel Construction

Crafted from 18/8 food-grade stainless steel, the FlaskMaster is built tough. It’s BPA-free, odor-resistant, rust-proof, and designed to withstand drops, dings, and everyday wear — making it the ideal bottle for your most active days.

🚗 Cupholder-Compatible Base

Unlike bulky flasks, the tapered design of the Stroid FlaskMaster fits most standard car cupholders — so your hydration is always within reach while you’re on the road.

💧 Ergonomic Handle & Flip Straw Lid

Hydration has never been easier. The integrated carry handle makes it easy to grab and go, while the flip-up straw lid offers one-handed, spill-free sipping on the move. Whether you’re driving, lifting, or typing, drinking is effortless and mess-free.

Designed for Every Lifestyle

The FlaskMaster 40oz Tumbler was crafted for everyday warriors — the early risers, gym-goers, office grinders, outdoor lovers, and weekend adventurers. Whether you’re commuting across the city or hiking into the wild, FlaskMaster delivers dependable hydration in any environment.

Perfect for:

• Gym sessions & fitness training

• Office or remote work setups

• Hiking, camping & outdoor adventures

• Travel, road trips, and commuting

• Hot yoga or spin classes

• Staying cool on hot summer days

Why Stroid?

Stroid isn’t just another bottle brand — we’re a hydration movement. Built in Britain and inspired by real life, Stroid designs products that blend performance with purpose. Our mission? To make hydration easier, cooler, and more sustainable for everyone.

When you choose Stroid, you’re joining a community that values:

• Sustainability – Say goodbye to single-use plastic

• Innovation – We obsess over the little details

• Durability – Every Stroid product is made to last

• Design – Because your bottle should look as good as it performs

Customer Reviews (★★★★★)

“The best tumbler I’ve ever owned. Keeps my water cold through my entire 12-hour shift!” – Amina J.

“Finally a large tumbler that fits in my car cupholder and actually doesn’t leak.” – Lewis T.

“I’m obsessed with the handle and the smooth sipping straw. It’s just perfect.” – Zoe R.

FlaskMaster 40oz Tumbler – Specifications

• Capacity: 40 oz (1.18L)

• Material: 18/8 Stainless Steel, BPA-Free

• Insulation: Double-wall vacuum insulation

• Lid Type: Flip Straw with Silicone Seal

• Handle: Integrated ergonomic carry handle

• Fits in Cupholder: Yes

• Weight: ~530g (empty)

• Care: Hand wash recommended

Order Yours Today

Stop settling for lukewarm coffee or melted ice water. Upgrade your daily hydration with the Stroid FlaskMaster 40oz Tumbler and feel the Stroid difference. Trusted by thousands and growing fast, we’re on a mission to redefine hydration — one bottle at a time.

🛒 Available now 
🚚 Free UK delivery on all orders 
♻️ Sustainable packaging. Always.

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