REDUCE has carved out a niche making hydration gear that doesn’t rely on plastic. The Aspen 20oz tumbler in Lilac Bud continues that approach with a borosilicate glass body and vacuum insulation. That means your iced coffee stays cold for a full 12 hours without the metallic taste you get from steel tumblers. It’s a smart choice for anyone who wants to ditch single-use cups without drinking from stainless steel all day.

The glass feels smooth and substantial in hand, not fragile. Borosilicate handles temperature swings better than standard glass, so it won’t shatter when you pour in cold water on a hot day. The straw is BPA-free, and the whole thing fits standard car cup holders. It’s a travel tumbler that works equally well on a desk or in a backpack.

One honest note: glass is heavier than plastic or thin steel. At 20oz, it’s noticeable when full. But the trade-off is a cleaner drinking experience and zero chemical leaching over time. If you value taste and sustainability over featherweight portability, this tumbler delivers.