Nathan IceStorm Insulated WaistPak (535ml) Black/Yellow

Nathan IceStorm Ins.WaistPak (535ml) BK/Yw
In Stock: 10 Days
  • RW Accessory Color: Black
  • RW Accessory Size: OSFM


Model Number: 4875NBSY

Protecting your fluids from the elements, the Nathan IceStorm Insulated WaistPak comes loaded with an insulated sleeve to hold an included 18 oz (535mL) SpeedDraw Flask.  This pack is optimized for the winter season with a large zipper puller for easy access while wearing gloves and a hand warmer pocket to prevent the bottle from freezing.  The angled holder makes it easy to access the bottle so you can focus more energy on your run.  Internal organization within the zipper pocket provide access to your essentials or nutrition, while an external shock cord system allows quick access to small items.


  • Included 18 oz/535mL double-wall insulated SpeedDraw Flask with IceCutter Cap with Blast Valve
  • Angled, insulated bottle holder allows easy one-handed access and prevents bouncing
  • Hand warmer pocket behind the bottle pocket prevents bottle from freezing
  • Zipper pocket with easy-pull tab makes it easy to open with gloves on and keeps essentials protected
  • Internal pockets help organize keys, phone, and other small essentials or nutrition
  • Extended side panels provide a comfortable fit
  • Adjustable front closure is easy to use on-the-go
  • External shock cord system for extra storage options
  • Weight: 8 oz/225g with empty SpeedDraw Flask


  • One size fits most: fits waist sizes 66cm to 112cm

Flask Details

  • Easy-squeeze, ergonomic 18 oz Nathan SpeedDraw Flask made from Super Flex Resin
  • 25% bigger, soft silicone nozzle is easy on your teeth, keeps shape and doesn't leak
  • Delivers high flow rate of liquid with little effort
  • Soft grip cap is easy to open, even with wet hands
  • Eastman Tritan copolyester; BPA- free and won't leech plastic taste
  • Bottle and cap are dishwasher safe on top rack
  • Replacement bottle for Peak Pak, Horizon Pak and SpeedDraw handhelds
  • Fits front pockets of Firecatcher Race Vest, Zeal/Zelos Vests, and other Nathan Race Vests