Many of us use headphones every day to block out the commuter din, to connect via hands-free phone calls, to rev us up at the gym, and for other important reasons. While over-ear headphones are a great option for passive and active noise cancelation, the added bulk doesn't always make them the ideal choice. If you want something lightweight and easily portable, it's time to invest in a solid pair of wireless earbuds. Although they may not provide the same level of intense noise cancelation as over-ear models, you'd be surprised how much sound a well-designed pair can block out.