Wilderness Equipment’s Hydration Sleeves toggle into any Wilderness Equipment backpack or daypack which features their Universal Accessory System webbing inside the throat. Choose size Small for any size of backpack or daypack, or choose size Large to fit bigger bladders into size Large backpacks and daypacks.

  • Toggles for simple installation into Universal Accessory System webbing
  • 20mm ladderlock suspension webbing for hanging bladder
  • Durable, high-quality construction
  • 210 denier nylon


  • Small: 2L
  • Large: 3L


  • Small: 425mm x 220mm
  • Large: 475mm x 265mm


  • Small: 53g
  • Large: 66g