The Sidi Spider SRS is one of our favorite shoes for fast trail riding and cross country racing. We like it because it has Sidi's second to none fit and super high quality that you can only get from an Italian made shoe. Perhaps the biggest reason to like the Spider is its sleek road shoe like looks and low weight in a durable mountain shoe. If you are tired of clunky, heavy mountain shoes - try the Spiders.
Flashy looks are thanks to a sleek profile but mainly to the gloss Vernice Technomicro upper. Breathability of the Technomicro is very good but Sidi adds nylon mesh panels to this version for maximum airflow and heat escape.
Technomicro is a composite microfiber material created from strands that are so fine that each one is less than one thousandth the thickness of silk. These fibers act like natural leather skin, but with the advantage of better strength, softer texture and lighter weight. Technomicro is also water-repellent, quick-drying, breathable and permeable to water vapor, making it an ideal material for shoe uppers. It is abrasion- and mildew-resistant, easier to clean than leather and resists stretching and wear.
In case you are wondering, SRS is short for sole replacement system. Just like better quality dress shoes, you can replace the soles on the Spiders when they wear so the Spiders will easily outlast other lesser shoes. The Caliper buckle and Soft Instep Closure are also replaceable as well.
The new Carbon Composite SRS Sole mimics former Dragon Carbon SRS sole resulting in a Spider that is stiffer and 40 grams lighter per pair. Retention is accomplished with Sidi's proven caliper buckle and two Velcro traps. Fit is enhanced with the Soft Instep Closure System and the Sidi Cup. The Soft Instep Closure System is adjustable from both sides, to perfectly center the EVA pad over a high or low instep. Excess strap on the crank arm (inside) side of the shoe may be trimmed after adjustment. The SIDI Heel Cup is an external, reinforced cup that stabilizes and supports the heel, with an anatomically shaped plastic design holds its form and doesn't break down over time, helping reduce heel slip and increase power transfer.
To validate Sidi'd warranty and to prevent sole cracking, SIDI Reinforcement Plate (or similar from Crankbrothers) is recommended for use with dual retention-bar style MTB pedals (Crankbrothers, Time and Look). The plate is not required for Shimano-style pedals