BT21 KOYA Lock & Lock Slim Tumbler + Bag Set

This slim bottle is powder coated, which is hard to chip and prevents condensation on the bottle's surface. Good for both hot and cold drinks.

Product Description: 
BT21 KOYA stainless steel tumbler (400ml) w/ carry bag 

Stainless Steel, PP, Silicone

Product Size: 
2.4" X 2.4" X 8.1"

Customer Reviews

Based on 3 reviews
love it!

These are very well constructed, sturdy, and the screw lid is secure. Very secure. It's not going to accidentally fall off. The bag it comes with is perfect for carrying it. I absolutely love it. The finish is matte, and I love my RJ bottle with the pink and ivory. Much prettier in person. Same with Koya. got them to gift my friends with. Maintains cold and hot drinks for a long time. i really love it


I purchased this because I love Koya way too much lol. I have owned insulated tumblers before but only one has ever been this effective. The size is perfect for my morning coffee. I always go to work with a smile on my face thanks to Koya. I love that his ear has fallen off, it just reminds me of RM constantly loosing his airpods. I honestly may find myself buying the Shooky tumbler as well. BT21 brings me so much joy. ,


I purchase this tumblr because I love how adorable Koya looks.🥰 The graphics on the tumblr looks great and the pouch that comes with it is so cute and stylish and very convenient way to hold your tumblr if you decided to have a hot beverage. I haven't been able to use it but I did see on other people review that it hold the heat for up to 7hrs which is s good thing for me cause I sometimes forget I even have drink and my drinks usually end up cold. It came with a little booklet for how to care for me which I love cause I wouldn't want to ruin it; its too cute! 🥰 Once again I'm pleased with my purchase 💜