This is my first time trying and using a collapsible cup for travel. It’s perfect. It is lightweight, convenient and easy to store. I love how I folds down or collapses allowing it to not take up much room. It’s easy to clean and just the right size meaning it doesn’t take up much room. It is also very sturdy. It is perfect and I definitely recommend it.

I love this little cup!! 😍 It's cute and easy to store. It being collapsible is it's best feature. I can take it anywhere, such as to work or pack it to go camping or on a trip. When I take it to work, I just collapse it and slip it into a small compartment in my purse. It's lightweight and durable too! It's even dishwasher safe! It's also super easy for my small kids to drink from and I don't ever have to worry about it being broken. It's very hard to damage. I want more of these in all sizes and I will be purchasing some in the near future! 10/10 would recommend.

Convenient and sturdy

This is a great product to carry on the go (camping, vacation, etc). It is made of half nylon (the black part) and half rubber/silicone (cyan part). Very easy to collapse and extend, have a sturdy bottom, durable for holding, and also simple to clean.

Disappointed

So disappointed ... the old 16oz x mug was great. Hiking/camping with a lightweight mug that holds 16oz. is what most people want. The x mug (16oz) replacement is made of stainless steel. Srsly?

Frontier Ultralight Collapsible Cup

I always carry it in my pocket so that I can drink water at any time. A very convenient mug. When my friends saw mine, they wanted the same one. You can quickly brew porridge or tea there, it folds up very simply and fits in any pocket

Frontier collapses in to a travel cup

These collapsible silicone cups are so convenient to carry. It's not just for camping outdoors, but it can be used even to local picnics or to the park. It's easy to clean and folds in neatly so i can carry it pretty much anywhere.

Perfect little cup

Folds up easily, holds 1 cup and even has measuring lines on the inside. You can toss it in the dishwasher and it also has a solid base and drinking rim. Perfect little addition for your hike, camp, or even daily household use.

Sea to Summit Frontier Ultralight Collapsible Cup

I like it for its additional support ring around the centre but I prefer the capacity of the larger older X-Cup and I find the older model has a nicer sound when you stir contents. Otherwise the cup works well as it is intended.

Small but mighty

This cup collapses to be so small it takes up no space at all - can even fit in a pocket. It's easy to expand and collapse.Expanded it's sturdy enough to hold without fear of collapse. There's an extra stiff band around the middle which helps with this and where your fingers sit.Perfect reusable travel cup.We got this and the metal cup to compare and whilst the other is sturdier overall, this one takes up less space and is easier to expand.

Vile taste

I bought this mainly for brewing tea. The size is okay, and it seems study enough to hold hot liquids without risk of spills. I cleaned this cup twice before using. I let room-temperature water sit in it for about five minutes. The result was spit-it-out undrinkable. I can only imagine that boiling water would magnify the horrible taste. Unlike other products (e.g., water bladder), this one didn't suggest ways to eliminate chemical/plastic taste using lemon juice or vinegar and baking soda, and having had marginally-satisfactory results from those methods on other products, I didn't try it on this cup. Returned.