Amazon has cut the price of a popular personal air cooler by nearly half, now selling for $36 instead of $70, its lowest price yet. The device has drawn attention as a budget-friendly way to stay cool during hot weather without the higher electricity costs associated with running a full air conditioning unit, and Amazon reports more than 1,000 purchases in the past month.

Unlike a conventional air conditioner, the unit is an evaporative cooler that uses ice and water rather than refrigerant, with a 1200ml capacity that shoppers say can keep producing cool air for up to a day on one fill. Reviewers have praised its quiet operation, rechargeable battery and compact, portable size, along with adjustable features such as a timer, variable fan speed and a misting option. The article also notes it forms part of a wider roundup of budget cooling devices, including a Walmart model that eliminates the need for a window-vented hose.