--Product Information-- Product Name: Quantum Trekking Pole Product Brand: Leki Best Use: Backpacking Trips Sizes Available / Specs: One size, 10.9 oz, 70 cm (collapsed), 135 cm (max length) --Test information— Location of Test: Appalachian Trail Duration: 4 Months --ratings— Value Rating: 10 Durability Rating: 8.5 Overall Rating: 10 Full Review Before I started my thru-hike in 2014, I was skeptical of trekking poles. After 4 months of relentless ups and downs from Georgia to Maine on the Appalachian Trail, I do not think I would have made it without them. The Leki Quantums were ideal because of their lightweight aluminum construction, and their convenient speed lock adjustability, when I was hiking through the rocks of Pennsylvania, any distraction from foot placement would lead to a painful rolled ankle or stubbed toe. The speed lock on the Quantums allowed me to adjust pole length without taking my gaze from the trail ahead. They are short when contracted, which allowed me to stow them along the shoulder strap of my pack while scrambling up rocks or even hitch-hiking. When you're looking to add some supportive stability to your hikes, not trying to reinvent the proverbial wheel, go with the Leki Trail Trekking Poles. With classic, simple design and dependably rugged materials, these poles offer everything you need in a pair of trekking poles and nothing you don't. They do feature Leki's easy-to-use Super Lock System, which allows for quick length adjustment and is engineered to support up to 300lb. The ergonomic Roundtop Soft Grip provides comfortable feel and stable grip with the performance basket, and carbide tips perform well on a whole variety of terrain. Review Summary Points "The Good" List: The Quantums are lightweight, convenient to adjust, and they have a lifetime warranty. The carbon diamond tips last about 900 miles. "The Not so Good List": The adjustable hand straps slip after extended use. Segments of aluminum bent several times when I fell on them. The Bottom Line: Great poles for a great price. After almost 2200 miles of ups and downs, I still use them regularly.