[Safety Design] The hourglass is made of high quality PVC material,non-glass,sturdy and durable,not easy to fall and break.Selected sea sand material is safe and non-toxic,suitable for children to use,so that parents feel more at ease. [ Interesting Shape] Sand timers is small and portable,cute animal shape and colourful sand make the hourglass more interesting,let the children get endless fun in the game interaction and learning life. [Creative Gift] Cartoon kids hourglass is a great gift for children,suitable for children as meaningful gifts and souvenirs on Children's Day,school season,birthdays.It can be also used as interesting desktop decorations,home decorations. [Quality Guarantee] The hourglass has been rigorously tested to meet the industry standard of 5% time error.Sand grains sometimes stick to the glass,this is a normal phenomenon,you can gently tap the glass with your finger or put it under the sun for a while!