3 Review(s)

this black stainless steel vacuum-insulated flask with LED/digital temperature display is aligning with rising demand for "smart" hydration products. These bottles are popular for their insulation (hot/cold retention up to 12-24 hours), leak-proof design, and no-battery-needed touch sensors, often in 500ml sizes. Searches emphasize features like "LED temperature display" for avoiding burns or checking drink readiness, with stainless steel and black color variants leading sales.