Shop online for High Sierra Classic 2 Series Wave 70W Hydration Pack. It was for $60 but now you can purchase it at $26.80. This Hydration Pack is ideal for keeping you hydrated during road biking, trail running, and hiking. Insulated water tube cover prevents water from freezing in the tube. Reflective loop holds a bike LED blinker. Body Dimensions: 16.25" x 10.5" x 0.25" Weight: 0.8 lbs.