Review on 🧴 UVBRITE UV Self-Cleaning and Water-Purifying Bottle TT-B02-18.6 Ounce: Rechargeable, Insulated Stainless-Steel Tumbler with Safety Lock - Ideal for Outdoor and Emergency Use by Shakim Yates

The main feature of this bottle is that the UV-C wavelength is exactly where it produces the most germicidal activity 254nm. The other bottles I looked at were closer to the 280nm germicidal limit. It is very durable. Once dropped, no harm. Keeps water cold (cold to below room temperature) for a reasonable time of 3 to 4 hours. I haven't tried hot liquid yet. I was so happy with this bottle that I bought 3 more to give the revivals to be safe when the water is iffy.