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With Declan, every moment feels special. From early morning coffee to late-night tea, they’re made to be part of your everyday joy—stylish, practical, and a little bit magical.
Perfect Temperature, Every Time
Thanks to Declan’s double wall design, your coffee stays piping hot, and your iced drinks stay refreshingly cool—all while keeping your hands cozy. These glasses are designed to hold the ideal temperature, so you can savor your drinks longer.
Everyday Ease
Safe for the dishwasher, microwave, and freezer, these glasses are ready to handle anything your day throws at them.
Gifting Made Easy
Whether it's a cozy cup of coffee or a soothing tea moment, Declan is perfect for those who want to cherish their favorite brews. Each set comes beautifully boxed, ready to surprise and delight any coffee or tea enthusiast!
T. Hsu
September 1, 2025
This is actually my third order of these glasses. My first order was about a year ago, and I have loved these mugs. Keeps my coffees and lattes nice and hot for a while. Definitely not as good as a thermos, but leaps and bounds above a coffee mug. They look great, easy to clean, and guests love these glasses. Unfortunately, while washing a glass a few weeks ago, it slipped and knocked against the side of my stainless steel sink. Instant shatter. I didn't think twice and ordered a replacement set off Amazon. It came in two days as promised, but unfortunately, there was no cushion packs in the amazon box. As a result, when I opened the JoyJolt box, both glasses were broken into fine little pieces. I processed a refund, and I am currently sitting on my cozy couch sipping my coffee. Would absolutely buy again!
Dhuha Ali
July 24, 2025
I bought this set of 2 Joy Jolt Declan Irish Double Wall Insulated Glass Coffee Cups-15 ounces to enjoy coffee with my husband by seeing the coffee and foam layers, they turned out better than we expected! They are very light weight, sturdy, microwave and dishwasher safe, keeps our drinks hot while the outer layer and handles stay cold! I put the cup in the microwave for 1 min, my milk came out steaming but the cup and especially the handle were cold so I easily took the cup out without any burns like I usually get with other ceramic or glass cups. We loved them so much that we orders another set for out kids to enjoy their hot chocolate with it! My kids love them too as these cups are very light so they can carry them around without spilling!I would definitely recommend this product to all my family and friends! :)
Amery J. Jones
July 22, 2025
As other reviewers have noted, these cups are amazingly light, but that does not detract at all from keeping your drink piping hot. They kept my cocoa a nice hot temperature right to the last drop but the outside was barely warm. No ceramic mug has ever done that. The overall design is simple but elegant, these are beautiful cups. They deserve to be displayed as an artistic statement, not packed away in the cupboard.
EZ
June 24, 2025
I saw these on the Amazon website and bought them for my husband after he had broken a few other clear glass heavier ones of a different popular brand. The other brand we had used for years so in the past year I decided to replaced them with the SAME brand which turned out to now be poorly manufactured with obvious highly inferior quality control. They arrived with rough areas where two halves were pieced together on the rims and with visible cracks. I sent them back. The replacements were no better. Amazon customer service was excellent...twice! (The reviews of others on Amazon reflected my same feelings of how the quality issues of the once popular brand went downhill.)I searched and found these double walled 15 oz. Declan JoyJolt cups and decided to splurge and purchased 4 of them. (They are pricy so that is why I gave the 4 STAR rating.) They are quality smooth clear glass double walled cups without any rough or abnormal spots. We are enjoying the new form and view of our teas or coffees within. So far so good after 2 mos of use.Because of the thinner lighter weight glass composition, I would not use them with younger children who would possibly not be as careful with them to cause easy breakage. UPDATE: AUGUST 13, 2019 In late July while having a coffee, I noticed a shiny reflection on the cup and inspected it closely. There was a fine hairline crack located within the outer glass wall that extended about 3-4 inches around and ascended up half way vertically on the cup. I felt the area of the line and could not feel any roughness at the crack and stopped using the cup. There wasn't any chip but a visible fine line within the outer wall. I hoped these expensive cups would have lasted for more than a few months with proper care by adult use and would prove to be more durable. We hoped to purchase these as anniversary gifts for our in laws based on own longevity and pleasure in using these cups daily, but now have reconsidered gifting after this experience. Can't return them but beware of even with extra care, the glass may show stress cracks at some point like our cup.
J. P. Hann
June 20, 2025
I have always loved the aesthetic of clear glass coffee mugs, but always found them to be better in concept than reality - they tended to be overly fragile, and would start too hot to touch but then lose heat remarkably quickly. Enter JoyJolt - durable, microwaveable and dishwasher-safe, easy to hold, amazingly well insulated, and a delight to drink out of. My wife and I have been using our sets for the last couple of months, and despite daily use and runs through the dishwasher, they still look brand new, are a joy to look at, and keep our coffee hot far longer than our old ceramic mugs. So yeah, I’m pretty happy.
Rose
June 5, 2025
These cups keep your hot drinks hot and the cold drinks cold! Ice does not melt in the cold drinks. They are well worth the money!
melissa jusztin
May 29, 2025
This coffee cup exceeded my expectations. I am so impressed that the coffee is hot yet the glass remains cool to the touch. I have both the the 10 and 15 oz. I even use the 15 oz for my water. Th functionality is exceptional and they are beautiful. I gave one to my daughter and she loves it too. If you are looking for a new coffee cup look no further.
Ammiedawn
May 25, 2025
Product Update: As I realized I could not safely put these in the dishwasher (unlike the website description says), I decided to only hand wash. My second cup just completely broke in my dish water, when I barely tapped it on my sink. I’m disgusted at the price and quality of this product. Do yourself a favor, and DO NOT BUY! You will regret it.Original Post: I’m really upset with this product and disappointed the return window has closed so soon. I bought because the description made me believe it was very durable lightweight glass. It is not. For how expensive these cups are, it should not have cracked down the side during a normal dishwasher wash. They are not dishwasher safe apparently but I believe I read they were. Too lightweight to be a good durable quality. Too expensive for the quality. I would not recommend at all. Too bad because they were pretty.
CRISTINA ISLAS ENCISO
April 30, 2025
ESTAN MUY LIGERAS, SE LAVAN MUY FACIL Y ESTAN MUY BONITAS
G Michaud
April 21, 2025
I had a 16 Oz cup but it was heavy for à cup with think glass. These cups are glass but so light. They are doublewalled so the coffee stays hottes longer. Love them.
KevAmy
February 16, 2025
Really pleasant and smart looking mug
G. Wall
January 10, 2025
Love them. I use them on a Miele machine. Holds 2 cappuccinos in one brew. Look great and feel great. Super light.
EJ
December 16, 2024
Really love the mugs bigger than expected and quite elegant
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