Saysky Unisex Flow Vest 12L Hydration Vest Set "Green"

Founded in Copenhagen in 2013, SAYSKY creates high-performance running apparel with an urban, understated attitude. Built for runners who move with purpose - whether chasing goals, clarity or simply the miles - the Flow Vest 12L delivers lightweight storage without compromising comfort or fit.

Expanding on the 8L platform, the Flow Vest 12L offers increased capacity for longer efforts, ultras and all-day adventures. Streamlined and breathable, it’s designed to sit close to the body with a stable, bounce-free feel across both road and trail. The adjustable fit adapts depending on load, ensuring comfort whether fully packed or running light.

Up front, flexible stretch pockets provide quick access to gels, nutrition and essentials, alongside two YKK® zippered compartments for secure storage. Two 500ml soft bottles are included and sit in dedicated chest pockets for easy hydration on the move. At the rear, a secure YKK® zip compartment and additional main storage space increase carrying capacity, while a hydration bladder sleeve with hanging strap offers further versatility.

A removable elastic cord system allows you to stash layers externally, and detachable pole-carry elastic loops make it suitable for more technical terrain. Reflective details and a lamp loop enhance visibility in low-light conditions.

A capable, lightweight 12-litre solution for runners who need more room - without extra bulk.

• Volume: 12 Litres
  
• 12L lightweight design with expanded storage.
• Chest compartments for 2 × 500ml soft bottles (included).
• Two main flexible pockets on the front.
• Two YKK® zippered pockets on the front.
• Secure back YKK® zip compartment for added capacity.
• Removable elastic cord system on back for layers or clothes.
• Hydration bladder compartment with hanging strap.
• Detachable pole-carry elastic-loops-system
• Easy adjustable fit for comfort on the move.
• Reflective details and lamp loop.
• Fabric Composition: 100% Polyester
• Colourway: Green
• Product Code: SA70002-310

All sizes displayed on our website are UK sizes.

We are currently working on measurements for apparel and accessories so please bear with us.

In the meantime, for footwear, please refer to the sizing guide here. However, if you require any additional advice on sizing, please contact us.

Worldwide shipping, domestic shipping in the UK, and in-store collection is available.

You can find all relevant shipping information here.

We have a 28-day return policy, which means you have 28 days after receiving your item to request a return. 

To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.