Maybe they've started to deteriorate

Not only does this free up bag space

Osprey Hydraulics (Hydrapak) 2

they look super cool and are available in a range of colours that will bling up your bike nicely

Fox Tecbase Short Sleeve Base Layer - M - Black Exclusive Maybe they've started to deteriorateThe secret sauce to your next run, the Tecbase Short Sleeve Base Layer is lightweight and form fitting, meaning you'll barely notice it under your jersey as you rip down the trail. It feels exactly how it was designed to feel, ultrasoft and second skin in nature. Constructed from anti stink fabric, the Tecbase Base Layer is ready to go wherever you're going and fast. Who's this item for: Any type of rider will appreciate this lightweight base layer.