SkyFlask Speed

It's exactly what it says it is, a silicon water bottle. Great for running, feels secure in the hand with the attached strap, no leaking, easy to clean out. It has a bite spout which is nice for running so you won't shoot an unexpected amount of water down your throat and choke and die. All in all, good product.

This is a perfect size for short walks, it's lite and I love the hand grip.The latch closes tight.

Vey happy with the practicality of this water bottle. It is a little awkward at first getting used to the straps around your hand but overall it’s very comfortable and I imagine the fit would be suitable for most hand sizes. I also appreciate how well the lid seals and retains water without leaking or anything. And on an even more positive note, it’s very easy to wash and clean. I typically carry this on my medium long runs when it’s warmer outside and it fits my need very well.

These are my favorite types of bottles for running but i will say they are very hard to keep clean and can easily gather dirt in the mouth peice which is a pain to keep clean. Other than that the bottle is great. It’s easy to fill, comfortable to carry and ive had no issues with leaking.

Best running water bottle on the market, easy to carry with the thumb loop doesn’t leak, holds the right amount of water, easy the use. Fits in your pocket when collapsed. Durability is great as I have dropped it multiple times on my runs.

Strong chemical smell that taints the taste of the water. Stored baking soda/water mixture more than once for several hours as well as soda/water/vinegar mixture to try to eliminate it, but the same bad smell/taste remains.

I've been using this bottle for a couple weeks now and the bottle definitely works for running. The collapsing feature is nice since it prevents the typical air pocket that causes the water to slosh that happens in hard bottles. It does take a bit of getting used to holding something mushy like this after having used hard bottles for years. Although I think this Skyflask functionally works I think there are two parts of the bottle that could be improved. Although the insulation is a nice feature to keep the liquid at temp for longer, I have a slight issue with how its constructed. There is an approximately 5 mm seam in the plastic shell running the length of the bottle under the hand strap where the insulation is compromised (see picture). If I put in water and ice, I can really feel the coldness in my palm which can become painful like holding anything really cold. I avoid putting ice in my other uninsulated hard bottles for this very reason, so I was hoping that this insulation would take care of that issue. I wish there was no seam or the makers at least put it on the other side where the fingers meet so I'm not touching the cold seam constantly. I assume they put it under the strap for design aesthetics. For this reason I don't put ice cold liquids, which is kind of disappointing. Secondly, I wish the strap had a way to get locked in place. Over the course of a run you want to cinch the strap down to keep a tight grip, but the strap will loosen itself over time. There isn't too much slack to begin with anyways so at its loosest I can still maintain an okay grip so its not too bad, just annoying to use.

This collapsible handheld bottle is a fantastic option for runners or anyone who wants hydration without bulk. The strap is adjustable and comfortable — it stays secure in the hand without needing to grip tightly, which is a huge plus during long runs. The collapsible design works exactly as intended. As you drink, the bottle compresses down, reducing sloshing and making it lighter to carry the farther you go. It also packs away easily in a vest or pocket when empty. The bite valve provides a steady flow of water without leaking, and the wide opening makes it quick to refill at aid stations. It’s easy to clean, and the material feels durable while still remaining flexible. Overall, it’s well-designed, lightweight, and reliable — a must-have hydration tool for distance running or fast-paced workouts where convenience and comfort matter.