Quality Hourglass: Sand timers made of high borosilicate glass, hand-blown and high definition, classy and lightweight. Time Management Assistant: A helpful time tool for your life. The sand timer can provide an optimal time frame for work and rest, and cultivate the sense of time to increase efficiency. For All Occasions: Hourglass sand timers can apply to different occations, work, yoga, decorations and more and can be a great gift for your family and friends
