Abstract: The invention relates to an apparatus for simulating one or more eco habitat conditions. The apparatus includes at least one eco capsule unit and an air inlet chamber for receiving air. The eco capsule unit includes a pressurized water driven turbine, a low-pressure vacuum chamber, a pressurized humid air chamber, where the pressurized water driven turbine is configured to receive pressurized water to propel the pressurized water driven turbine, for generating a highly humidified air-water mixture and a pressurized humid air-water vapor by creating turbulence. The vacuum chamber is configured to enable a wind chill simulation and to remove heat from water for generating a water with reduced temperature by controlling the rate of evaporation of water.

Abstract: A foldable skate board assembly includes a board having a front wheel and a rear wheel attached thereto, two mounting seats mounted on the board and each including a first notch and a second notch, and a steering column including a lower end attached to the front wheel to move therewith and an upper end. The steering column includes an inclined extension pivotally connected between the mounting seats by a pivotal pin. Two handles are attached to the upper end of the steering column. A slider is slidably mounted to the inclined extension of the steering column. A positioning member is mounted to the slider to move therewith. An elastic element is mounted between the pivotal pin and the slider.