Concave Spike High Cut Please refer to the size information on the sole of the shoe. The size is listed in the appropriate field. I tried them on twice on natural grass. However, I have been storing them because I don't have the opportunity to play soccer. Thank you for viewing. CONCAVE is a soccer brand originating from Australia. Currently, it is based in Manchester, England, the birthplace of modern soccer, and its sales activities have expanded not only in the UK but also in the US. It is used by many soccer players, both professional and amateur, in the UK, the US, Australia, and other countries. Compatible Ground: All Ground Soccer Spike Uniform Spain France Germany England Italy Argentina Brazil Messi Ronaldo Phantom Tiempo Mercurial Vapor Copa X Predator Morelia Beta fgsgag Ambros Borume Future King Ultra Asics ace17.1 x17.1 Ace 17.1 X 17.1 Adizero f50 Mercurial Vapor Mercurial Magista Tiempo Hypervenom Morelia Ignitus Paramexico Evo Power Evo Speed Soccer Spikes Morelia Monarcida Morelia 2 Morelia Neo Morelia neo Hypervenom Mercurial Tiempo Magista Ligerra X X Ace ACE Predator Messi Copa Pathique Ignitus Spikes Soccer Spikes Soccer Overseas Limited Morelia neo Tiempo Legend Nike Mercurial Vapor Mercurial Superfly Mercurial Superfly Vapor Hypervenom Phantom Finish Magista Obra Magista Obra Magista Opus Magista Opus Tiempo Legend tiempo legend nike magista obra 2 Adizero F50 Predator Mania X Ace Mizuno Basara Morelia Morelia Neo Wave Ignitus Asics Puma Barcelona Real Tottenham Manchester City United Arsenal Japan National Team Chelsea Liverpool