Back Protection

Body Armor
5 Mountain Bike Chest and Back Protectors for Gravity to Trail Riders [Review]
Hydration Packs
The EVOC Neo 16L Hydration Pack is Best for Big Backcountry Days
Full Face Helmets
Crash Stories: One Serious Injury Prevented by a Hydration Pack, Another by Full Face Helmet
  4
Body Armor
SHRED. Flexi Back Protector Covers Your Spine and Has Space for Gear
  1
Body Armor
Review: The Bluegrass Eagle Armour Lite D3O Spine Protector Has Got your Back
Hydration Packs
Review: Thule Rail 12 Pro Hydration Pack Has a Back Protector, Straps for Pads and a Full Face Helmet
  1
Mountain Bikes and Gear
New Evoc Neo Hydration Pack Includes Back Protection, Free Crash Replacement
  2