The ever dependable and hugely popular Ultra Vest is even better in the new series 5 upgrade. Superior stretch fabric constructions that allow the pack to shape to your body makes you feel like you should never be apart (but seriously you should take it off before bed time). It's got enough storage for anyone doing unaided runs up to 50km. If you're competing at events that are well marked with aid stations, this could carry you even further by storing all your essential supplies. It's big enough for the long days out, and small out for the training runs. The upgraded Comfort Cinch system allows you to custom fit with easy on-the-go adjustment to ensure a now bounce run. And at 10.8L storage capability, this bad boy has you covered.
Body bottles are included, and it does have capability to add a 2L reservoir (sold separately).
THE NITTY GRITTY
Upgraded lightweight hook and loop sternum adjustability
Two rear zippered stash pockets for optimal safety and organization
Small weather resistant pocket on Shoulder strap for chapstick, tablets, and small essentials
Comfort Cinch™ 2.0 - more minimal, lightweight, and adjustable
Shoulder strap shaping to promote weight distribution and comfortable fit
Lightweight 4-way stretch with rip stop pattern for added durability
Front stretch mesh pockets are phone compatible
Corded elastic for external gear stash and overall compression
Weight (w/o Bottles): 180 g / 6.3 oz
Volume: 10.8L / 659 in3
Bottles: 2 Body Bottle™ II 500
Materials: • Materials are updated to: Flex Mono Mesh, MicroMono Mesh, 20D Nylon 66 sil/pu, 4-way stretch Nylon/elastane with micro-rip for increased durability