The two-section design of MSR's SureLock TR-2 Poles is ideal for trips where they spend the majority of the time in your hands â" not on your pack. MSR's patent-pending Trigger Release adjustment system offers a full range of rapid adjustability directly from the grip, making these ideal for ski touring, snowshoeing and on-trail use over variable terrain. SureLock Adjustment System: 100% positive-locking mechanism offers the confidence of absolute, non-slip performance in all conditions.