Product Description
Your hand cramps up gripping a hard bottle for two hours. You slow down at aid stations fumbling to refill. You finish your run with a full-sized bottle still bouncing in your hand because it never collapsed. Sound familiar? Here's what most athletes don't realize — the problem isn't carrying water. It's the wrong vessel for the job.
The Feed Skyflask Speed 500ml is the handheld soft flask built for runners who want fast refills, a fatigue-free grip, and zero slosh from the first mile to the last.
No Death Grip Required The padded thumb loop and adjustable hand strap let you carry 500ml of hydration without squeezing or clenching. Your hand stays relaxed mile after mile — a bigger deal than it sounds at hour three of a race.
Refills in Seconds, Not Minutes The 42mm SpeedFill cap flips open wide for fast filling at aid stations and snaps shut leak-proof before you've even started moving again. No unscrewing. No fumbling. No losing time.
Shrinks With Every Sip As you drink, the flask collapses — eliminating the slosh and imbalance of a half-empty hard bottle. When it's empty, fold it flat and tuck it into your vest pocket without missing a stride.
The flask body is built from TPU — a durable, flexible, food-safe material with RF-welded seams, meaning the joins are heat-fused rather than glued, making them significantly stronger under repeated stress. It's BPA and PVC-free, and tough enough to freeze solid or handle hot summer training. At 500ml you have enough capacity for longer efforts between aid stations without the bulk of carrying a traditional water bottle.
Fill at the start or any aid station: The wide 42mm opening fits ice cubes and mixes easily — fill, snap the cap shut, and go. Dial in the strap: Cinch the adjustable strap to your hand size once before your race so it's ready to grab and go every time. Pro tip: Carry it in your non-dominant hand to keep your dominant hand free for poles, gels, or checking your watch without ever putting the flask down.
Trail runners and ultramarathon athletes have made handheld soft flasks the standard for shorter-to-mid efforts where a full vest feels like overkill. The ambidextrous design means it works for every athlete regardless of which hand feels natural.
Stop white-knuckling a hard bottle for hours. Get a flask that works as hard as you do.
For gear that arrives damaged or falls under the manufacturer's warranty: Please send a photo of the damage or error message to hello@thefeed.com. We will either help process a claim for the product and a replacement product or store credit will be provided, or we will direct you towards the correct place to make a warranty claim for the product. For returns on gear that you have used, we follow the manufacturer's instructions for satisfaction guarantees. This is specific to each gear product, terms and conditions may change.
The Feed Skyflask Speed 500ml FAQ's
Everything you need to know before getting started.
Hard bottles stay rigid whether full or empty, creating slosh and imbalance in your hand. The Skyflask Speed collapses as you drink, keeping weight balanced and eliminating that annoying half-empty bounce. When it's done, it folds flat and disappears into a pocket.
The padded neoprene thumb loop lets you slip your thumb through and carry the flask without gripping it at all. Your hand stays completely relaxed — no cramping, no clenching — which makes a real difference on longer efforts.
Yes. The wide 42mm opening is designed for exactly that — add powders, mixes, or even ice cubes before a run. It rinses clean easily after use.
Yes. The flask is made from BPA and PVC-free TPU — a food-safe material that's safe for all your nutrition and hydration needs. It can also be frozen for cold drinks on hot training days.
The flask and cap are dishwasher safe for easy cleaning. The hand strap should be hand washed and air dried. The wide 42mm opening also makes it easy to clean with a standard bottle brush.