Hydro Flask 40 oz Travel Tumbler — Surf Blue insulated stainless steel, handle & straw

If you want a large, durable tumbler that reduces refills and travels easily, this 40 oz Surf Blue Hydro Flask delivers. Built with double-wall TempShield vacuum insulation and a sturdy ergonomic handle, the tumbler is engineered for long-lasting cold performance and everyday convenience. The color-matched lid and straw create a unified look while practical details—like a leak-resistant press-in lid and cupholder-friendly shape—make it useful on commutes, at the gym, or on the sidelines.

How long will my cold drink stay chilled?

The Hydro Flask 40 oz uses TempShield double-wall vacuum insulation to limit heat transfer and maintain low temperatures for many hours. While exact duration depends on ambient conditions and how often you open the lid, the construction consistently outperforms single-wall bottles.

• Double-wall vacuum insulation reduces heat exchange.
• Stainless steel interior avoids flavor transfer or lingering odors.
• Press-in lid helps limit temperature loss when closed.

Is the lid leak-proof and is the straw easy to use?

The tumbler includes a splash- and leak-resistant press-in lid paired with a flexible straw that’s gentle on teeth and simple to angle. The design keeps sipping comfortable and minimizes spills during typical daily activities, though the lid is not marketed as 100% leak-proof for submersion.

• Press-in lid reduces splashes and accidental sprays.
• Flexible straw allows angled sipping and soft contact.
• Straw and lid components are removable for cleaning.

Will this fit in my car cupholder or gym bottle pockets?

The 40 oz Travel Tumbler has a tapered, cupholder-friendly profile that fits most standard vehicle cupholders and many stroller or bench holders. The robust handle stays out of the way during placement but offers a secure carry when needed.

• Tapered base designed to slide into most cupholders.
• Ergonomic handle for easy transport and one-handed use.
• Durable stainless-steel shell resists dents and daily wear.

How do I clean and maintain the tumbler?

The tumbler and many of its parts are dishwasher-safe for quick cleaning, but handwashing extends component life. Remove the straw and lid parts for thorough rinsing and allow everything to air-dry to prevent trapped moisture.

• BPA-free materials; interior resists odor and flavor retention.
• Dishwasher-safe components, though handwash recommended for longevity.
• Not suitable for microwave, stove or freezer use, and avoid hot beverages.

Who is this for: The Hydro Flask 40 oz Travel Tumbler in Surf Blue suits anyone who needs large-capacity cold hydration with a portable, rugged design. It’s ideal for commuters, athletes, parents on the go, students, and outdoor enthusiasts who prefer fewer refills, a comfortable handle, and a stylish monochrome finish that matches daily gear.