We like simple gear because it’s easier to use with cold hands, in a daze of calorie-debt, in the middle of a storm, or under the light of a headlamp. Plus, with no moving parts, there is almost nothing to break. Petzl’s Reverso 4 is a classic example of a simple piece of equipment that does its job and does it well. Capable of rappelling and belaying leaders or followers, this belay device weighs only 59g. Deep V-shaped friction channels provide precise braking power on even skinnier rope, but it also quickly relieves applied load while taking up slack in a belay. As one of the more versatile belay devices on the market, the Reverso 4 is the latest iteration of a Petzl icon and might just become a collector’s item with its snazzy colors.