Bluegrass tuatara idro d3othe most advanced protection for your upper body and against thirst tuatara idro features a hydration pocket for a 1l reservoir the fully waterproof fabric of the pocket prevents condensation water damping the vest and reaching your back ideal for training and racing without a backpack d3o back and shoulder protectors offer a high level of protection and freedom of movement the high density eva provides additional protection for the torso featuresd30 shoulder guard