Glow in the Dark Drink Coasters Set of 2

Due to overcast skies, the UV activation of the Glow Coasters took time to become visible. Once the sunlight came out, and after several hours of exposure (while sitting upright in a large window), they performed as expected. What a delight ! This gift is something needed by the older American I gave them to - so I want to say "Thank You." Unfortunately, travel called me away too soon, so my observations were suspended. I will inspect them in a few days to see how long they held their "sunshine charge". Should they need more exposure, I will try again. It will be interesting to see how long a good re-charge lasts. So far, I am happy with them.

I'm crazy for all things Glow-In-The-Dark, and I use coasters in my office and on my nightstand, so this was a no-brainer. They are a nice size, are protective of my glassware (being made of silicone), and if you charge them up, they glow like crazy. I recommend a UV flashlight for a quick and deep glow. They won't sit on your desk and gather power all day then glow at night, but no true glow-in-the-dark item does unless they sit in direct sunlight and then are plunged into darkness. No charge will last through the natural setting of the sun. Also, these are made of silicone, not the absorbent material that some coasters are made of, so if your glass gets real sweaty, the coaster will be wet. None of these are deal breakers for me, just the reality of the situation. My primary drink container is a 32 oz. Vminy water bottle, and I love the cushion and quiet that comes with this coaster, and that bottle never sweats, so it's a match made in heaven. Lastly, they are durable. My grandsons are 5 & 7, and I charge them up and let them play with them and I have no concerns that they could hurt them in any way. They think they are super cool btw!

The product is great, arrived in a timely manner, and were a good value. Shipping is WAY too expensive though

Wow --- Holy Macaroons Are you kidding me with this dealio ... amazing product ... like yowzers ... I had this idea a few years back but my funding fell through ... Tony "The Hammer" Vinzatzo took this idea and cut me out of the deal. It would not have been that bad ...but he shot me in my arm and then crashed my prized Datsun. I mean ... who messes with another man's Datsun. Anyway ... glad to see someone benefit from my pain. 5 stars

They actually work! I came across these on Instagram and purchased these for my boyfriend as part of his birthday gift, and they are awesome! They actually glow really well and seem to get enough natural sunlight throughout the day just sitting on the table so we don't have to do anything.