Here's what other sites are saying:
These premium trail-runner's revolutionary Ground Control System™ automatically adjusts stability on uneven terrain for a super-solid ride. Synthetic leather/nylon mesh uppers are resistant to stretching, and maintain excellent durability and breathability. Neutral fit utilizes adiPRENE™ + midsoles under forefoot for elastic rebound that preserves forward propulsion force; adiPRENE heels absorb shock. GCS technology controls heelstrike with two plates connected by four spring joints--adaptive stability and secure support that moves in any direction. Torsion® midfoot supports allow natural rotation between heel and forefoot and improve surface adaptability. Traxion™ outsoles offer optimal grip and ground penetration, plus they're lighter and more durable than rubber.
- REI refers to the men's version
The adidas adiStar men's trail shoe boasts Ground Control System in the heel which adapts to any uneven terrain to stabilize your foot. QuickStrike outsole which provides lightweight durability and flexibility, while Traxion delivers maximum grip in all directions. The midsole contains adiPrene + that retains natural forces at toe-off for greater forefoot efficiency.
- FogDog Sports refers to the men's version
Excellent for running on hot and undulating trails, the Adidas adiSTar TR shoe features a highly breathable nylon mesh upper with a shock-absorbing adiPRENE cushioning in the forefoot. The lightweight profile is excellent for running in high altitude areas, although you may need to consider heavier reinforcement material along the upper if you run on volcanic rocks and other serrated terrain. Innovative elastic adiPRENE helps optimize your energy by retaining natural force as you push off with your toes, resulting in an efficient stride that could help you improve your personal bests.
- Altrec Outdoors refers to the men's version