Hydro Flask 21 Oz Standard Flex Cap Black
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Price: $34.95 - $25.41
(as of Aug 07, 2025 13:39:56 UTC – Details)
Stainless steel, cupholder compatible, fits anywhere—the compact, reusable, refillable Standard Mouth insulated water bottle keeps cold drinks cold for 24 hours, hot drinks hot for up to 12 hours, and holds enough hydration for quick adventures.
21 OZ BLACK BOTTLE: The stainless steel insulated reusable water bottle keeps drinks cold for 24 hours, and hot up to 12. This Hydro Flask bottle is dishwasher safe and easy to clean.
24 HOURS COLD. 12 HOURS HOT: The insulated water bottle keeps drinks cold for 24 hours and hot for 12 thanks to double-wall vacuum insulation. TempShield insulation is designed to be lightweight and efficient temperature retention, keeping contents ready to sip.
LEAKPROOF: Say goodbye to leaky water bottles. The Hydro Flask Flex Cap is leakproof when closed. Toss it into your bag without worry.
FITS CUPHOLDERS: The cupholder-friendly design means your bottle fits seamlessly in most cupholders. Designed for seamless cupholder cohabitation, it’s right at home on the open road, on the sidelines, in a pack or wherever you need to set your sips.
PURE TASTE: Durable pro-grade stainless steel ensures pure taste and no leftover flavor transfer. So, today’s water won’t have any taste of yesterday’s iced tea.
Customers say
Customers praise the water bottle’s performance, noting it keeps water cold for up to 24 hours, has great insulating capabilities, and doesn’t leak. They appreciate its quality build, pretty color, and size that fits in cup holders and backpack pockets, with one customer highlighting the lantern design of the lid as a nice touch. While some customers consider it worth the price, others feel it’s not worth the cost. The bottle’s durability receives positive feedback, though some report it dents easily during use.
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