For the trail, there's a difference between being over-packed and under-prepared. For those runs up along steeper, more rugged terrain, ASICS' GEL-Quantum 90 gives new meaning to minimal construction: Mesh for cooling, an Ortholite??? sockliner for wicking comfort, and shock-attenuating GEL?? Technology work together to create a bulk-free, smooth ride up to the peak and back. Just fill your hydration bladder, come prepared with a snack, and you're ready to begin a new adventure.. . Mesh and synthetic upper. Rearfoot and Forefoot GEL 191497784181 33600000141 1022A115