What is your return policy?

We offer a 30-day money-back guarantee . To begin a return, you must first contact our customer support team . Please use the Support section of our website or email us directly at contact@hydroh2oflask.com with your order number and the email address associated with your order . Returns sent without prior authorization will not be accepted. Processing Time : Refunds can take up to 14 business days to process after your return has been delivered to our warehouse. Condition : Returned items must be in new condition , with all tags attached, accessories included, and in the original packaging. Non-Compliance : If the returned product does not meet these requirements, the refund will be denied and the item will be disposed of . Shipping Costs : For regular returns (non-defective items), all shipping costs must be paid by the customer . Final Sale Items : All sale purchases are final and not eligible for return.

64 oz Stainless Steel Water Bottle

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64oz Stainless Steel Insulated Water Bottle

⚠️ Final Sale - No Returns This product cannot be returned or exchanged. Please review all details carefully before purchasing.

Half-gallon hydration for long workouts and full days

Stop interrupting your workout or workday for another refill. The Gym Marathon carries 64 oz of water in a durable insulated stainless steel bottle built for training, commuting, road trips, and outdoor days.

Choose your color and bag style, then add it to your cart while your preferred option is available.

Why customers choose Gym Marathon

Cold for 24 hours, hot for 12: Double-wall vacuum insulation helps maintain drink temperature.
Leak-proof and travel-ready: A secure lid helps keep bags and gear dry.
Clean materials: BPA-free, PFAS-free, lead-free 18/8 food-grade stainless steel.
Easy to fill and clean: The 2.05-inch wide-mouth opening makes room for ice and easier hand washing.
Built to carry: A durable powder-coated, sweat-proof exterior offers a secure, condensation-free grip.
Quiet placement: A soft-landing base helps reduce noise when you set the bottle down.

Made for

Long gym sessions, strength training, and endurance workouts
Busy workdays when frequent refills are inconvenient
Road trips, outdoor events, and all-day errands
Anyone ready to move from a smaller bottle to half-gallon capacity

Size and capacity

Capacity: 64 oz / half gallon
Dimensions: 4.85 inches wide × 11.2 inches high
Bottle weight: 1.86 lb
Mouth opening: 2.05 inches
Style options: Select with bag or no bag above; included accessories depend on your chosen variant.

Customer proven: Rated 4.9/5 from 42 reviews.

Shipping, warranty, and returns

Delivery: Orders typically arrive in 5–7 business days. Free shipping applies to orders of $50 or more.

View shipping details · Read the 30-day bottle warranty

Please note: This item is final sale and cannot be returned or exchanged. The 30-day bottle warranty still covers eligible manufacturing defects.

Ready for fewer refills?

Select your preferred color and style above, then add the Gym Marathon 64 oz bottle to your cart.

18/8 Food-Grade Stainless Steel
Double-Wall Vacuum insulation
24-hour cold & 12-hour hot
Wide-Mouth opening for easy ice filling & cleaning
Leak-proof design
Lead Free
Non-Toxic
PFAS Free
BPA Free
Easy Carry
Powder Coating Finish
Sweat-proof matte finish, condensation-free
High Volume - Half Gallon
Soft-Landing Base for quiet placement

Premium 18/8 Stainless Steel – Built from durable, food-grade stainless steel for safe, long-lasting, and eco-friendly hydration.
Double-Wall Vacuum Insulation – Keeps beverages ice cold for 24 hours or piping hot for 12 hours, making it the perfect insulated water bottle for any adventure.
Wide-Mouth Opening – Easily add ice cubes, fill with your favorite drinks, and clean with ease.
Leak-Proof & Travel-Ready – Designed with a secure lid to prevent spills and leaks, even on the go.
Safe & Non-Toxic – 100% BPA-free, PFAS-free, and lead-free for clean, worry-free hydration.
Durable Powder-Coated Finish – Features a grainy texture for a non-slip, water-resistant, and anti-drop grip.
Sweat-Proof Matte Exterior – Condensation-free design keeps your hands, desk, and bag dry.

Dimensions: 4.85”W x 11.2”H

Capacity / Weight: 64oz / 1.86lb

Mouth Opening: 2.05"

Optional Included Accessories:

1 Basic Bag

18/8 Food-Grade Stainless Steel
Double-Wall Vacuum insulation
24-hour cold & 12-hour hot
Wide-Mouth opening for easy ice filling & cleaning
Leak-proof design
Lead Free
Non-Toxic
PFAS Free
BPA Free
Easy Carry
Powder Coating Finish
Sweat-proof matte finish, condensation-free
High Volume - Half Gallon
Soft-Landing Base for quiet placement

Premium 18/8 Stainless Steel – Built from durable, food-grade stainless steel for safe, long-lasting, and eco-friendly hydration.
Double-Wall Vacuum Insulation – Keeps beverages ice cold for 24 hours or piping hot for 12 hours, making it the perfect insulated water bottle for any adventure.
Wide-Mouth Opening – Easily add ice cubes, fill with your favorite drinks, and clean with ease.
Leak-Proof & Travel-Ready – Designed with a secure lid to prevent spills and leaks, even on the go.
Safe & Non-Toxic – 100% BPA-free, PFAS-free, and lead-free for clean, worry-free hydration.
Durable Powder-Coated Finish – Features a grainy texture for a non-slip, water-resistant, and anti-drop grip.
Sweat-Proof Matte Exterior – Condensation-free design keeps your hands, desk, and bag dry.

Dimensions: 4.85”W x 11.2”H

Capacity / Weight: 64oz / 1.86lb

Mouth Opening: 2.05"

Optional Included Accessories:

1 Basic Bag

Eco-Friendly & Non-Toxic

Made with durable 18/8 food grade stainless steel. All our water bottles are made with Lead-free, BPA-free, and PFAS-free materials. A sustainable water bottle that’s better for you and the planet.

100% Leak-Proof Design

Travel with confidence knowing your bottle is 100% leak-proof, keeping your bag and gear dry wherever you go.

Double-Walled Insulation

Our durable double-walled insulation stainless steel is able to keep your drinks cold to up to 24 hours and 12 hours hot.

Frequently Asked Questions

We currently ship within the United States only. Orders typically arrive within 3–5 business days, and tracking details will be included in your confirmation email.

We offer a 30-day money-back guarantee. To begin a return, you must first contact our customer support team. Please use the Support section of our website or email us directly at contact@hydroh2oflask.com with your order number and the email address associated with your order. Returns sent without prior authorization will not be accepted.

Processing Time: Refunds can take up to 14 business days to process after your return has been delivered to our warehouse.
Condition: Returned items must be in new condition, with all tags attached, accessories included, and in the original packaging.
Non-Compliance: If the returned product does not meet these requirements, the refund will be denied and the item will be disposed of.
Shipping Costs: For regular returns (non-defective items), all shipping costs must be paid by the customer.
Final Sale Items: All sale purchases are final and not eligible for return.

Simply email us at contact@hydroh2oflask.com or use the form in our Support section. Our team will get back to you promptly with instructions to make the process quick and easy.

At this time, we do not offer replacement parts separately. However, this is something we are actively working on and hope to provide in the near future.

No. Please do not place your bottle in the microwave or freezer. The stainless steel construction and double-wall insulation prevent these methods from being effective and may damage the bottle.

Durable but Easy to Carry

Perfect jar to carry water/juice/coffee for day trips to beaches and parties!

I’ve been using the Costco ones, and the handles killed my patience. This one surprisingly fits much better to my hands while being carried. And it wouldn’t fall and roll around in the car like the other tall bottles would do. The only challenge for me is that I cannot use any of the standard straws, but neither can I with the Costco ones, so I’m pretty happy with the produce and very satisfied with the purchase.

Perfect Size for Camping Adventures

The half gallon water bottle is just the right size for serving as an ideal container during my wild camping trips. This bottle’s sturdy construction makes it durable for rugged outdoor environments with standing bumps and knocks.

Perfect Choice

Husband said it was the best water container he’s used in a long time. Be aware if the size, it’s big.

Ice cold for days!

I have been looking for a solid replacement for my last bottle for a bit now and I think I've found it! Very well built and keeps my water cold (with ice) for 2Ish days

Fantastic stainless water jug

I love this bottle. it's a 1/2 gallon overall and keeps things ICE cold (if you put ice in it) for a very long time. I filled it with ice during the summer on a fishing trip and after coming back from the 5 hour trip it still looked like it didn't melt. I left the ice in there for a few days and after three days I still had ice loft, so yeah, it does the job. It comes in four different colors, has a great leak proof lid and doesn't leach any flavor into what you put into it.

Its doesn't sweat like some others do and is double insulated and has a nice large handle on top of it. The only draw back is the weight. When you get this thing filled if feels like it could knock someone out. I love it though as I'm always looking for large water containers to take when we go somewhere and this fits the bill.

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Gym Marathon