[Material and Size]:Sand Hourglass Timer is made of glass material,size is 7cmx17.5cm,lasts for 15 minutes [15 Minute Timer]:Sand clock is designed to accurately measure 15 minutes.It's the great kitchen tool for timed cooking,facial masking,playing games,reading or studying,exercising,sauna,brushing and downtime [Time Management Tool]:is a great time management tool that can remind you of study time.It can also be used as a children's timer toy gift,early education center timer,learning timer,yoga exercise timer and service dining timer to practice patience and perseverance [Multifunctional Use]:In addition to home use,Glass Sandglass can also be used as a stylish and practical timer in cafes,restaurants and bathrooms [Ideal Gift]:Sandglass Timer is a great gift for friends and a beautiful decoration for home or office.Its practicality makes it a useful tool in daily life