LONGWAY 3.4oz/100ml Empty Leakproof Cosmetic Pot Jars，Wide-Mouth Plastic Mask Container with Dome Lids for Beauty Products, DIY Slime Making or Travel Storage MakeUp（Black）

These are the perfect size for my homemade body products. I was using small mason jars for packaging when giving product as gifts but wanted something with a little more boutique/ upscale feel. I love that they are reusable and the sturdy plastic liner fantastic. My experience is they are indeed leakproof. They pass TSA guidelines for travel as well, and I like them so much I ordered the pink ones.

These were bought specifically for use with UV resin and are very good for keeping resin "in the dark ". Solid black, well sealing. Would recommend to anyone planning to dip pieces and not wanting to waste any resin.

Got these for a trip to Europe. No leaks and didn't get stopped by security, definitely recommend!

I got these to use for UV resin when I want to dip something for a top seal etc. I poured some UV resin in one when I got it... and capped it. It is still good to go weeks later. I'm sure they are great for everything else you can stick in them. Recommend.

I make my own cream with coconut oil, Shea butter and beeswax. Unfortunately the coconut butter will melt over 74 degrees and if the container is not kept upright it will leak into the lid threads and make a mess upon opening. I will continue to use these but not for creams I'm shipping.

Wide opening which was what I was looking for. And it is travel size so you can bring to the airport. May leak if you put liquid like water, but I normally just put lotion and shampoo, and it was fine.

Absolutely love these containers! I use them for Shea butter lotion. Even if I forget my container in the truck and the lotion melts....the lotion stays in the containers without spilling!!

These 4 oz jars are great for traveling because they are leak proof and durable. They also fit easily into a purse, carryon or luggage!