Northwave sonic tech srs road shoesthe sonic tech srs road shoes feature an ergonomic design that meets the requirements for intensive training and high level road cycling competition their carbon fibre and glass fibre sole offers lightness and rigidity that the rider needs in addition to being compatible with all road pedals features solecarbonglass fibre upperlightweight polyurethaneelastomere upper constructionmultilayer thermo welded airflow system closing systemsrs closing sys