Alpinestars Limited Edition SQUAD Tech 10 Boots Size:10 it’s specifically formulated not to gutslogo it’s specifically formulated not to harm O rings and other fuel injector moving parts Symmetric front tire design enhanced with Castle Block™ promotes braking stability while increasing biting edges and contact pressure on soft and slippery surfaces The Tech 10 boot is CE certified Maximizing these priorities is the key achievement of the new Tech 10 and the result is an all new boot with a greater range of movement and flexibility while offering better control over the flexion and torsion forces that significantly improve boot performance