4L Lightweight Running Hydration Vest — Trail & Road Pack

A lightweight 4L hydration vest built to carry water, gels and your phone without bouncing — so you can focus on the kilometres, not the kit.

At roughly 310g, this 4L vest is made to sit close and stay stable on the run. Three pockets — including a divided main compartment — keep your soft flask, phone and a hydration bladder organised and secure. Dual adjustable sternum straps and adjustable shoulder straps lock the fit in place to minimise bounce, whether you're on an early-morning road session or a long day on the trails. It ships ready to run, with a 1.5L hydration bladder and a 500ml BPA-free soft flask both included in the box.

Key features

• Lightweight ~310g build — barely-there weight for long training runs and race day
• 4L capacity across three pockets, including a main compartment with an internal divider
• Dual adjustable sternum straps — height- and tension-adjustable, plus adjustable main shoulder straps, for a bounce-minimising fit (chest adjustment range up to 18cm)
• 1.5L hydration bladder included — with an external hose pass-through for easy sipping on the move
• 500ml BPA-free soft flask included — carry electrolytes up front, water in the bladder, ready to run out of the box
• Dedicated phone pocket — fits large phones up to iPhone 16 Pro Max
• Front reflective strips for added low-light visibility
• Breathable back panel to help manage heat on longer efforts
• Nylon construction with quality stitching

Specifications

What's in the box

• 1 × 4L running hydration vest
• 1 × 1.5L hydration bladder
• 1 × 500ml BPA-free soft flask

Good to know

• This vest is not waterproof — it's built for breathability and light-weather running, not for keeping contents dry in heavy rain.
• Reflective detailing is on the front only. The back panel carries the maker's name in white, which aids visibility but isn't a substitute for reflective material — for night running, we recommend pairing it with a clip-on light.
• There's no dedicated clip to secure the bladder hose. Routing the hose through a shoulder-strap loop helps reduce movement on the run.