WATERSY THK64 64 oz Insulated Stainless Steel Water Bottle

The WATERSY THK64 is a 64 oz insulated stainless steel water bottle with two lid options and a carrying strap. Its large capacity and straw lid suit longer outings, while its size may be less convenient when you want a compact bottle.

At a glance

Listing describes a 64 oz capacity, equivalent to a half gallon.
Two lid options include a flip-up straw lid and a carry lid, with two replacement straws.
Manufacturer claims cold retention for up to 48 hours and hot retention for 24 hours.
Listing describes a detachable handle strap and dishwasher-safe care.

Price

$23.98Save 20%

Reference price: ~~$29.99~~

Price checked: Nov 14, 2026

View offer

Pros and cons

Pros

Two lid styles let you choose straw sipping or a carry-lid setup.
The stated half-gallon capacity reduces the need for frequent refills on longer outings.
A detachable handle strap and replacement straws are listed among the included components.

Cons

A half-gallon stainless steel bottle is a substantial format for everyday carrying compared with smaller bottles.

Technical specifications

14 specifications

Identity
Brand	WATERSY
Model	THK64

Capacity and form
Listed capacity	4 pounds
Form factor	Round
Dimensions	9.88"W x 4.9"H
Color	Grey Black

Materials and care
Material	Stainless Steel
BPA statement	Bisphenol A (BPA) Free
Care	Dishwasher Safe
Reusable	Reusable

Design and use
Lid and straw configuration	2 leak-proof lids, 2 replacement straws
Insulation claim	Keeps your beverages ice-cold for up to 48 hours or piping hot for 24 hours
Age range	Adult
Recommended use	Water

What to know before buying

Listing details to confirm

The listing's capacity field says "4 pounds," while its title and feature copy describe 64 oz or a half gallon. The model name is THK64, but a separate model-number field says THK64Orange. Confirm the capacity and exact variant in the selected listing. The stated insulation times are manufacturer claims, not independently measured results. The title calls out two lids, while the components field also lists two replacement straws, a detachable strap and a cleaning brush.

What’s in the box

Included

2 leak-proof lids
2 replacement straws
Detachable handle strap
Cleaning brush

Who is it for?

A good fit for

People who want a large water supply for gym sessions, hiking or desk use.
Buyers who prefer to switch between straw sipping and a carry lid.
Those looking for a reusable stainless steel bottle with a carrying strap.

Less suited to

Anyone prioritizing a small, light bottle for compact bags or frequent one-handed carrying.
Buyers who need a confirmed capacity specification before ordering, given the conflicting listing fields.

WATERSY THK64 64 oz Insulated Stainless Steel Water Bottle · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.5 / 5 · 34 ratings

5 stars85%85%
4 stars6%6%
3 stars0%0%
2 stars0%0%
1 star9%9%

Customer feedback reports positive impressions of overall quality and temperature retention. One customer is described as keeping ice water with ice for up to a day and a half. That experience is consistent with the intended use of an insulated bottle, but does not establish that the listing's longer insulation claims will apply in every situation. The rating distribution is mostly five-star with a smaller one-star share, so the aggregate is favorable but not uniformly positive.

Positive themes

Customers describe the bottle as good quality.
Customers appreciate its temperature retention.

Frequently asked questions

How much does the listing say this bottle holds?

The title and feature copy say 64 oz, or half a gallon, but the capacity field says "4 pounds." Confirm the selected variant and capacity before purchase.

What lids and accessories are listed?

The component list names two leak-proof lids, two replacement straws, a detachable handle strap and a cleaning brush. The feature copy describes a flip-up straw lid and a carry lid.

What insulation performance is claimed?

The manufacturer claims cold drinks stay cold for up to 48 hours and hot drinks stay hot for 24 hours. These are listing claims, not independent test results.

Is the bottle dishwasher safe?

The listing specifies dishwasher-safe care. It does not clarify whether that guidance applies to the bottle, lids and other components equally.