Asics Lethal Speed 6 Stud 2 Boot The LETHAL SPEED ST rugby boot is a recommended choice for rugby players looking for a blend of comfort and stability on the field. A moulded sock-liner and FLYTEFOAM technology promote noticeable underfoot comfort without adding additional weight. The shoes PU outsole sports 4 forefoot and 2 rearfoot studs for stability and better grip, particularly on slippery surfaces. The studs are a standard thread, readily available to replace. Resilient and comfortable the LETHAL SPEED ST rugby boot is prepared with durable components that help deliver premium comfort for long-lasting cushioning throughout the match. Sizing is in US. (Please note that generally boots fit 1 size up on sports shoes. If for example you are a US 9 in sports shoes, you should consider a boot in US 10) FEATURES HG10MM: Shifts body mass forward reducing strain on lower limbs. SOLYTE LASTING: Solyte lasting in various degrees of density to give either comfort or stability. REMOVABLE SOCKLINER: An EVA or SpEVA sockliner moulded to the shape of the foot, which can be removed to accommodate a medical orthotic. INJECTION PU OUTSOLE: An injection moulded polyurethane outsole that has great definition and reduces weight.