Glike Silicone Collapsible Cup Lid - Floding Travel Cup/Mug - Lightweight Water/Coffee Drinking Bottle Outdoor Camping Hiking - BPA Free [19oz]

 Did the shake test before and after putting it through the dishwasher, no leaks. Did it with coffee and learned to make sure you line up the threads correctly, but once I fixed it, no leaks! No warping with the plastic pieces through top rack dishwasher and the "no scald ring" works as advertised. Will purchase more!

Was amazing for the first 10 times I used it, but now it just leaks everywhere. Theres no air hole at the top so when you drink the entire cup collapses in on itself. The bottom isn't as sturdy as it looks and wobbles when you set a full hot cup on a table. Ive collapsed it a couple times and it looks like the plastic is going to split in the middle. Other than that its just ok.

Really liked the bigger capacity and compactness of this collapsible travel cup. However, it is not leak proof as described (unless the seal on the one I have is somehow damaged.) When turned upside down, some beads of the contained water would appear around the seam of the tightly screwed on lid. Will further comment after our trip in 30 days.

I really like the whole idea of this cup. In the summer I take the grand kids to a National Park for a week and I like to carry a little coffee along on our excursions. A collapsible cup would do the job and could then be tucked away in a bag or even a pocket. However, because of severe arthritis in my hands I am not able to tighten the lid enough to prevent leaks. When it is tight enough I can't loosen it. My wife has adopted the cup and likes it very much. The array of colors to choose from is a nice option.

I am all about reducing plastic consumption, so I carry this collapsible cup with me so I don't have to use single use plastic cups that restaurants provide. This is small when it is collapsed and it is leak proof. Don't forget to say no to plastic straws too! This cup is also good for leftovers if you eat out. Saves on styrofoam doggie bag containers. I bought another one because it is a great product and easy to take along with you. Love it!

I took one of these on a hiking trip. I used the included carabiner to hook it to my backpack. It was light and sturdy. It is a little tricky to get it to collapse correctly at first, but it's easy once you get used to it.

I really liked this at first but with repeated use the top band completely slips off, leaving no support for the rest of the squishy cup, spilling hot liquid all over. Also it becomes very difficult to screw the lid on tight enough to not leak on your lap when you drink because the top band, not being secured to the cup, turns with the lid. Great idea, but very poor and dangerous design.

Make sure to only use it for Luke warm to cold items. No real protection from heat, it is not insulated so hot drinks cool quickly. Also, has a tendency of o collapse when full if you are not careful where you put pressure. Served its purpose to have a portable light drink container but wasn’t the usability I was looking for