As the saying goes, slow and steady wins the race. Slow and unsteady? Not so much. Keep your balance and give your knees a rest with the Black Diamond Trail Ergo Cork trekking poles. Cork handles didn’t compromise grip when our testers' hands got sweaty, and the flick-locks on these aluminum poles never budged. Get the Ego Corks for $110 (12 percent off) on Backcountry.com this week, and pair them with joint-strengthening exercises for long miles on happy legs.