When rollerblading which of the following items will protect you from injury and which will not: Helmet, a baseball cap, sunglasses, knee pads, backpack, headphones, and elbow pads?
A helmet, knee pads, and elbow pads will protect you from injury, while a baseball cap, sunglasses, backpack, and headphones will not.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: When rollerblading which of the following items will protect you from injury and which will not: Helmet, a baseball cap, sunglasses, knee pads, backpack, headphones, and elbow pads?
### Input: 
### Response: A helmet, knee pads, and elbow pads will protect you from injury, while a baseball cap, sunglasses, backpack, and headphones will not.