The Petzl Alto crash pad is premium grade, standard sized bouldering pad, lavished with innovative, high grade features and materials.
The Alto offers excellent protection from bouldering falls and landings with a one-piece hingeless design that comprises of a triple-layer foam assembly: two laminated sheets of hard, closed cell foam on top of a sheet of high grade open cell foam. Its patented folding/closure system lengthens the life of the foam, protects the harness when the pad is in use and also provides a large storage compartment for all your gear when the crash pad is closed (in carry mode).
The carry system utilises a super comfortable strapping configuration constructed via a laminate technology, similar to that seen in many modern climbing harnesses. It is both low bulk and exceptionally comfy on long walk-ins, even when the pad is heavily loaded with gear. The harness provides both a chest strap and waist belt and is extremely well fitting, spreading the load extraordinarily effectively. We reckon the Petzl pads offer the most adjustable and comfortable carry harnesses currently available.
This is by far the best pad I've ever owned. Had my first for 6 months and just bought a second to replace a fading DMM Dyno. The Alto has superb features and foam- which offers as good as longevity as I've encountered.