REDUCE Aspen 20oz Vacuum-Insulated Glass Tumbler — Borosilicate Core, Extra-Wide Straw & Insulated Sleeve

REDUCE Aspen is a 20oz vacuum-insulated borosilicate glass tumbler with a removable insulated sleeve, extra-wide straw, and Soft Sit™ base for cold drinks on the go.

Built to combine clear glass taste with practical insulation, the Aspen tumbler pairs durable borosilicate glass with a vacuum-insulated sleeve so your iced beverages stay colder longer without the chemical flavors of plastic. The lid and extra-wide straw fit both the glass core and the sleeve, making it simple to sip thick smoothies, boba, or iced coffee at home, in the car, or at your desk. Thoughtful details like a non-slip Soft Sit™ base and dishwasher-safe components make it a low-maintenance everyday cup.

How long will the Aspen keep my drink cold?

The Aspen uses a vacuum-insulated sleeve around a glass core to prolong chill. While performance varies with ambient temperature and ice quantity, typical use keeps cold drinks noticeably cool for up to 12 hours.

• Vacuum-insulated sleeve reduces heat transfer.
• Borosilicate glass preserves flavor without plastic taste.
• Fits common cupholders for travel without spilling.

Can I use thick drinks like smoothies or bubble tea?

Yes — the included extra-wide straw is sized for dense beverages so you can enjoy smoothies and boba without clogging. The straw and lid are designed to work with both the glass and the insulated sleeve for flexible sipping options.

• Extra-wide straw accommodates tapioca pearls and thick blends.
• Leak-resistant lid keeps drinks contained while sipping.
• Straw and lid compatible with both glass and sleeve configurations.

Is the Aspen safe and easy to care for?

The Aspen prioritizes food-safe materials and convenient cleaning. It’s made from BPA-free components and durable borosilicate glass, and many parts are dishwasher-safe for simple upkeep.

• Borosilicate glass resists thermal shock and preserves taste.
• BPA-free lid and straw for safer daily use.
• Detachable sleeve and lid pieces clean in the dishwasher.

What protects surfaces and makes it travel-friendly?

The Soft Sit™ base cushions contact to prevent noise and protect furniture finishes, while the slimmer profile fits most cup holders for commuting or driving. The insulated sleeve also adds impact resistance for safer handling.

• Soft Sit™ base prevents marks and reduces clatter.
• Cupholder-friendly shape for cars and strollers.
• Insulated sleeve adds grip and protection for the glass core.

Who this is for: The REDUCE Aspen is designed for people who want the clean taste of glass combined with practical insulation and portability. It suits smoothie and boba lovers, iced coffee drinkers, commuters who need a cup that fits cupholders, and anyone seeking a more sustainable, BPA-free daily tumbler that’s easy to clean and gentle on surfaces.