Smart Straps Got a Cap or Karabiner? Kulkea ski boot backpacks include webbing loops, daisy chains or looped webbing ends for karabiner attachment. More Stories Corner Bumpers Protect the Pack! Kulkea ski boot bags in the Speed line and Powder Trekker have… Full Side Zippers Get to your boots quickly. Extended zippers allow the ski boot pockets to open wide… Hydration Holster Holds two small water bottles or one larger refillable bottle.