REDUCE Cold1 40 oz Tumbler - Oahu Blue Vacuum-Insulated Stainless Steel with Handle & 3-Way Sip Lid

The REDUCE Cold1 40 oz Tumbler is a vacuum-insulated, 18/8 stainless steel water bottle with a handle and three-way lid that keeps drinks cold all day while fitting most cup holders.

This 40-ounce REDUCE tumbler blends large-capacity hydration with travel-friendly features: a built-in handle, a Soft Sit base, inner ounce markings, and a Sip-It-Your-Way lid that converts between a flip spout and a reusable straw. Finished in Oahu Blue, the bottle is designed for everyday use at home, in the office, or on the road and is made from BPA-free, recyclable materials for easy cleaning and sustainable reuse.

How does the insulation keep drinks cold throughout the day?

The Cold1 tumbler uses dual-wall vacuum insulation and 18/8 food-grade stainless steel to minimize heat transfer and lock in beverage temperature. That combination slows warming from ambient air and prevents exterior condensation, so the bottle stays comfortable to hold.

• Dual-wall vacuum design reduces heat exchange.
• 18/8 stainless steel interior preserves flavor and resists corrosion.
• Sweat-proof exterior prevents moisture rings and keeps surfaces dry.
• Leakproof flip lid option secures liquids when closed.

What makes the Sip-It-Your-Way lid useful for different situations?

The three-way lid gives you multiple drinking modes—sip through a spout, drink directly, or use the included reusable straw—so you can switch depending on whether you’re driving, working, or exercising. The lid is designed to be leak-resistant when closed and easy to open for one-handed use when needed.

• Flip spout for quick sips on the move.
• Wide opening for direct drinking or adding ice.
• Reusable straw included for iced drinks and smoothies.
• Secure closure reduces spills in bags or cup holders.

Will the tumbler fit in my car and stay stable on surfaces?

The slim 40 oz profile combined with a Soft Sit base is engineered to fit most vehicle cup holders while providing a non-slip, scratch-free contact with surfaces. A built-in handle offers extra control when carrying or removing the bottle from tight spots, and the base helps dampen noise and reduce sliding.

• Slim, tall shape engineered for common cup holders.
• Soft Sit base prevents scratches and reduces movement.
• Comfortable handle for secure carrying and retrieval.
• Sturdy construction keeps drinks upright during travel.

How does this tumbler help me track hydration and stay eco-friendly?

Inner ounce markings on the inside wall let you measure intake at a glance, making it easier to meet daily water goals without separate tracking tools. The BPA-free, recyclable materials and dishwasher-safe design support repeated use and simple cleaning, reducing reliance on single-use bottles.

• Inner ounce markings for precise intake monitoring.
• Dishwasher-safe components for convenient cleaning.
• BPA-free construction promotes safer reuse.
• Recyclable stainless steel reduces long-term waste.

Who is this for? The REDUCE Cold1 40 oz Tumbler in Oahu Blue suits anyone who wants a large-capacity, travel-ready bottle that keeps drinks cold, fits most cup holders, and supports active hydration tracking. It’s a practical pick for commuters, remote workers, gym-goers, parents managing busy days, and outdoor enthusiasts who value a leak-resistant lid, a reusable straw option, and durable, recyclable materials.