High Temperatures (25c+) and/or strong sunshine can cause over expansion of the air inside your SUP and in a worst case scenario, mis-shape or damage your board beyond economical repair. On The Beach / By The  Lake: Avoid leaving your SUP fully inflated in hot sunshine for long periods, by either utilising shaded areas or regularly going back on the water. If this situation is unavoidable, release some pressure via the valve to 8psi in hot weather. On & In The Car In Hot Weather: It is best practice to transport your SUP deflated, as cars get really hot in strong sunshine and the same goes for boards left sunbathing on roof racks. However, if transporting inflated is unavoidable which we do not recommend, please reduce air pressure of the board to lower than 8psi.