HydraPak UltraFlask™ Speed 500ml

HydraPak UltraFlask™ Speed 500 ml – perfect balance between stability and flexibility

The HydraPak UltraFlask™ Speed 500ml offers the optimal balance between a stable shape and soft flexibility . With its slightly wider design and durable 3D welded base, the bottle stands firmly when filled, while the soft material means it fits perfectly into running vests and larger backpack pockets .

The bottle features the SpeedFill™ cap , which allows for quick refills on the go and seals tightly for leak-free transport . The self-sealing silicone bite valve provides high flow and automatically closes after each sip – so you get sips, not drips . As you drink, the bottle shrinks, reducing splashing and movement while running.

The UltraFlask Speed is made from extremely durable and abrasion-resistant TPU with RF welded seams for superior durability and elasticity. The wide 42mm opening makes it easy to fill with water, ice or sports drink, and the bottle is also compatible with 42mm threaded water filters , including the HydraPak 42mm Filter Cap – perfect for backcountry adventures.

Weighing just 42 grams , this is a great choice for runners, trail runners and ultra runners who want reliable hydration with minimal weight .

Benefits of HydraPak UltraFlask™ Speed 500ml

500 ml capacity – ideal for tempo and long workouts

Ultra-light – only 42 g

Stable 3D welded bottom for a secure fit

SpeedFill™ lid – fast and tight filling

Self-closing bite valve – drip-free use

42 mm wide opening – easy to fill with ice & sports drink

Compatible with 42 mm water filters

Shrinks when you drink – less splashing, better comfort

Durable TPU with RF welded seams

Wide temperature range (can be frozen, max 60 °C)

Specifications

Volume: 500 ml / 17 fl oz

Weight: 42g / 1.4oz

Dimensions: 240 × 55 mm / 9.4 × 2.2 in

Material: TPU, PP, silicone, POM, 304 stainless steel

Valve: Self-sealing silicone bite valve

Lid: SpeedFill™

Temperature resistance: Frozen to max. 60 °C

Suitable for you as:

Running trail, ultra or road

Uses a running vest or light backpack

Want a stable but compressible soft bottle

Needs quick refilling and drip-free use

Looking for an ultra-light premium hydration solution