I bought these because I needed a fun timer that would take “approximately” one minute. Anything with ten seconds would’ve been fine. Both of the timers I received take nearly 2.5 minutes to complete, and it’s not really possible to visually estimate when one minute is up. Thank goodness for free returns.I grew up having these at my Grandparents house. So I thought it would be fun for my Grandkids to have their own. They have loved them!! Very sturdy and have held up well.It was as described I was just expecting bigger but for the price great dealI have not been able to stop her from staring at her hands except with this bubbler, it broke and the oil got on her skin and burned her. I want to order another and I thought maybe if I seal-a-meal it, it might prevent the oil from coming through if dropped. It says 100% refund if defective but only a month window to return. Hoping the company sees this message and reaches out to me.My kid really loved these but overtime the colors faded away.Stunning color & action! I bought these on a whim and they are way better than the typical toy. In fact, each one is a beautiful work of art and engineering! Great colors certainly, but better yet are the clever designs. Plastic is strong and perfect refractive index match for what must be clear silicone oil inside. That means the colors dance and move apparently like magic, diverging and bending around unseen barriers in their path, when in fact it's just clever science! Fantastic!The look beautiful, my toddler will stare at it for hours.Only had a couple days but already my children love them. I bought them for my autistic son to help him,calm down when he's getting a sensiry overload and it works well for that he sat there for hours just watching it. My daughter also enjoyed playing with them even though she doaent have a sensory disorder. The flow is fast but the kids dont seem to mind. It is thin and plastic and if they were to get thrown on a hard surface id assume it would break easily. But so far no leaks.GoodKids love it1 jours après avoir reçu les produits il en a un qui as couler donc peut être investir pour une meilleure qualité !!It was broken when I received it. The liquids leaked everywhere.