Being the shoe used in the first 9a onsight you will expect big things from the Tenaya Oasi, and you wont be disappointed. The shoe has been in development for 2 years to achieve a performance shoe which can be used on everything from micro edges whilst bouldering to slopers on an endurance pitch.
As usual there are various acronyms for the technologies in the shoe. First off there is the MRRB system which stands for Maximum Range in Response and Balance, i cant find any details about how this works but it is supposed to help your balance through dynamic response(?)
There is also the SXRDynamics system which links the fastening system to the sole and structure of the shoe for a better fit and increased power. Tenaya have taken this to the next level in the Oasi with what they call the 'Draxtor' system which is a very precise lacing system.
The Oasi is an exercise in design to prove that performance doesnt necessarily mean a shoe is uncomfortable.
Fastener: Velcro, Draxtor PAT system
Tounge Lycra with two perforated layers
Lining: Cotton with TXT treatment
Midsole: Double midsole GI 1.8 y TST 150
Insole: TST multi-layer stretch tex
Outsole: Vibram XS Grip 3.5mm
These fit a bit more like Sportivas than other Tenaya models, they are also narrower than some shoes which is good for medium/lower volume feet.