It seems like summer just got started, yet already we're starting to hear echoes and whispers of "back to school." Of course back to school is the biggest season for the backpack industry, but year round people who have active outdoor lifestyles find themselves in need of a sturdy and comfortable way to carry stuff around. But unfortunately all too often backpacks are responsible for back, shoulder, and neck pain when they get overstuffed and all their design flaws become painfully obvious.

So this year before you go shopping check out these 4 ergonomically designed backpacks suggested by Natural Health -- ranging in price from $10 to $90 there's something for every taste and budget.