Sea to Summit  Frontier Ultralight Collapsible Cup

[This review was collected as part of a promotion.] 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.

[This review was collected as part of a promotion.] 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.

[This review was collected as part of a promotion.] 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.

[This review was collected as part of a promotion.] 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.

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.

I use this backpacking and I appreciate the lightweight and packability. I did not notice any odd taste from the cup with the hot liquid as others described. I did hand wash it well before first use. Great purchase for the morning coffee on the trail!

This is the best cup. It is great for hiking, works for dogs on the trail when you are in a short distance. Where it really shines is in amusement parks / other places that restrict water because they want you to buy overpriced water. Bring it in and have a large cup to enjoy using the water fountain. It's so small and light it fits in a pocket or any pocket of your bag. I bring this everywhere

In an effort to reduce size and weight I replaced my Sea to Summit Cool Grip X-Mug with this Sea to Summit Frontier collapsible cup and it did not disappoint. Although it does not have the Cool Grip technology, handling hot coffee was not an issue when holding the cup at the plastic top rim and/or center ring. On the cups inner, there is the customary measuring markings up to 12 fluid ounces which I found to be plenty for all my two-serving dehydrated meals, my breakfast coffee, lunch cider, dinner milk, and nighttime hot chocolate under the stars. I believe that this is a great replacement for the Cool Grip.

[This review was collected as part of a promotion.] 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 bought primarily to use as a light weight, compact measuring cup. It's small enough to fit into your cook kit. Has easy to read measurements on the inside. I bought two.