With two included water bottles, the Buzz is ideal for long runs on and off the trail. Built with 210d Robic Alkex, it’s equally light and durable for more miles under your feet.

Special Price $37.46 Regular Price $49.95
In stock

Whether you’re going for a long run or keeping your hiking gear to a minimum, fill up the included water bottles (FDA compliant, BPA free) and slide them into the Buzz for hands-free running and easy access water. The main stretch mesh pocket and key clip keep your phone and keys safe while the adjustable cover flap accommodates a lightweight rain shell, gloves and/or a beanie. The large format air mesh backpanel provides increased breathability while the Alkex ripstop ensures durability over a lifetime of miles. With the Buzz, stay hydrated and stay moving. Just remember to plan your bathroom stops accordingly (runners, we’re talking to you).

All Mountainsmith products come with the Forged for Life Guarantee, the official Mountainsmith lifetime warranty.


  • Dual bottle holsters
  • Main stretch mesh pocket (sized to fit iPhone 8 and Galaxy S8) with key clip
  • Adjustable cover flap accommodates lightweight rain shell, gloves, beanie, etc.
  • Hidden zippered pocket
  • Reflective highlights
  • Two FDA compliant water bottles (BPA free) with wide mouth flexible nozzles included
  • Large format air mesh backpanel for increased breathability
  • Adjustable 1.5" waistbelt


  • 210d Robic® HT Nylon with Alkex (Aramid) R/S
  • 210d Nylon Embossed Liner


  • Dimensions: 8 x 18 x 1.75
  • Waistbelt: 24" - 48"


  • 120 cubic inches / 2 L


  • Up to 7 lbs


  • 8.7 oz / 0.25 kg